640991520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{353}}^1$

素因数の和:484

約数の個数: 288

約数和(自身を含む): 2386670832

約数和(自身を除く): 1745679312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 97, 104, 117, 120, 130, 144, 156, 160, 180, 194, 195, 208, 234, 240, 260, 288, 291, 312, 353, 360, 388, 390, 416, 468, 480, 485, 520, 582, 585, 624, 706, 720, 776, 780, 873, 936, 970, 1040, 1059, 1164, 1170, 1248, 1261, 1412, 1440, 1455, 1552, 1560, 1746, 1765, 1872, 1940, 2080, 2118, 2328, 2340, 2522, 2824, 2910, 3104, 3120, 3177, 3492, 3530, 3744, 3783, 3880, 4236, 4365, 4589, 4656, 4680, 5044, 5295, 5648, 5820, 6240, 6305, 6354, 6984, 7060, 7566, 7760, 8472, 8730, 9178, 9312, 9360, 10088, 10590, 11296, 11349, 11640, 12610, 12708, 13767, 13968, 14120, 15132, 15520, 15885, 16944, 17460, 18356, 18720, 18915, 20176, 21180, 22698, 22945, 23280, 25220, 25416, 27534, 27936, 28240, 30264, 31770, 33888, 34241, 34920, 36712, 37830, 40352, 41301, 42360, 45396, 45890, 46560, 50440, 50832, 55068, 56480, 56745, 60528, 63540, 68482, 68835, 69840, 73424, 75660, 82602, 84720, 90792, 91780, 100880, 101664, 102723, 110136, 113490, 121056, 127080, 136964, 137670, 139680, 146848, 151320, 165204, 169440, 171205, 181584, 183560, 201760, 205446, 206505, 220272, 226980, 254160, 273928, 275340, 302640, 308169, 330408, 342410, 363168, 367120, 410892, 413010, 440544, 445133, 453960, 508320, 513615, 547856, 550680, 605280, 616338, 660816, 684820, 734240, 821784, 826020, 890266, 907920, 1027230, 1095712, 1101360, 1232676, 1321632, 1335399, 1369640, 1540845, 1643568, 1652040, 1780532, 1815840, 2054460, 2202720, 2225665, 2465352, 2670798, 2739280, 3081690, 3287136, 3304080, 3561064, 4006197, 4108920, 4451330, 4930704, 5341596, 5478560, 6163380, 6608160, 6676995, 7122128, 8012394, 8217840, 8902660, 9861408, 10683192, 12326760, 13353990, 14244256, 16024788, 16435680, 17805320, 20030985, 21366384, 24653520, 26707980, 32049576, 35610640, 40061970, 42732768, 49307040, 53415960, 64099152, 71221280, 80123940, 106831920, 128198304, 160247880, 213663840, 320495760, 640991520]

約数ペア:

[(1, 640991520), (2, 320495760), (3, 213663840), (4, 160247880), (5, 128198304), (6, 106831920), (8, 80123940), (9, 71221280), (10, 64099152), (12, 53415960), (13, 49307040), (15, 42732768), (16, 40061970), (18, 35610640), (20, 32049576), (24, 26707980), (26, 24653520), (30, 21366384), (32, 20030985), (36, 17805320), (39, 16435680), (40, 16024788), (45, 14244256), (48, 13353990), (52, 12326760), (60, 10683192), (65, 9861408), (72, 8902660), (78, 8217840), (80, 8012394), (90, 7122128), (96, 6676995), (97, 6608160), (104, 6163380), (117, 5478560), (120, 5341596), (130, 4930704), (144, 4451330), (156, 4108920), (160, 4006197), (180, 3561064), (194, 3304080), (195, 3287136), (208, 3081690), (234, 2739280), (240, 2670798), (260, 2465352), (288, 2225665), (291, 2202720), (312, 2054460), (353, 1815840), (360, 1780532), (388, 1652040), (390, 1643568), (416, 1540845), (468, 1369640), (480, 1335399), (485, 1321632), (520, 1232676), (582, 1101360), (585, 1095712), (624, 1027230), (706, 907920), (720, 890266), (776, 826020), (780, 821784), (873, 734240), (936, 684820), (970, 660816), (1040, 616338), (1059, 605280), (1164, 550680), (1170, 547856), (1248, 513615), (1261, 508320), (1412, 453960), (1440, 445133), (1455, 440544), (1552, 413010), (1560, 410892), (1746, 367120), (1765, 363168), (1872, 342410), (1940, 330408), (2080, 308169), (2118, 302640), (2328, 275340), (2340, 273928), (2522, 254160), (2824, 226980), (2910, 220272), (3104, 206505), (3120, 205446), (3177, 201760), (3492, 183560), (3530, 181584), (3744, 171205), (3783, 169440), (3880, 165204), (4236, 151320), (4365, 146848), (4589, 139680), (4656, 137670), (4680, 136964), (5044, 127080), (5295, 121056), (5648, 113490), (5820, 110136), (6240, 102723), (6305, 101664), (6354, 100880), (6984, 91780), (7060, 90792), (7566, 84720), (7760, 82602), (8472, 75660), (8730, 73424), (9178, 69840), (9312, 68835), (9360, 68482), (10088, 63540), (10590, 60528), (11296, 56745), (11349, 56480), (11640, 55068), (12610, 50832), (12708, 50440), (13767, 46560), (13968, 45890), (14120, 45396), (15132, 42360), (15520, 41301), (15885, 40352), (16944, 37830), (17460, 36712), (18356, 34920), (18720, 34241), (18915, 33888), (20176, 31770), (21180, 30264), (22698, 28240), (22945, 27936), (23280, 27534), (25220, 25416)]