21371040

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:141

約数の個数: 240

約数和(自身を含む): 80681832

約数和(自身を除く): 59310792

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 32, 34, 36, 40, 45, 48, 51, 54, 60, 68, 72, 80, 81, 85, 90, 96, 97, 102, 108, 120, 135, 136, 144, 153, 160, 162, 170, 180, 194, 204, 216, 240, 255, 270, 272, 288, 291, 306, 324, 340, 360, 388, 405, 408, 432, 459, 480, 485, 510, 540, 544, 582, 612, 648, 680, 720, 765, 776, 810, 816, 864, 873, 918, 970, 1020, 1080, 1164, 1224, 1296, 1360, 1377, 1440, 1455, 1530, 1552, 1620, 1632, 1649, 1746, 1836, 1940, 2040, 2160, 2295, 2328, 2448, 2592, 2619, 2720, 2754, 2910, 3060, 3104, 3240, 3298, 3492, 3672, 3880, 4080, 4320, 4365, 4590, 4656, 4896, 4947, 5238, 5508, 5820, 6120, 6480, 6596, 6885, 6984, 7344, 7760, 7857, 8160, 8245, 8730, 9180, 9312, 9894, 10476, 11016, 11640, 12240, 12960, 13095, 13192, 13770, 13968, 14688, 14841, 15520, 15714, 16490, 17460, 18360, 19788, 20952, 22032, 23280, 24480, 24735, 26190, 26384, 27540, 27936, 29682, 31428, 32980, 34920, 36720, 39285, 39576, 41904, 44064, 44523, 46560, 49470, 52380, 52768, 55080, 59364, 62856, 65960, 69840, 73440, 74205, 78570, 79152, 83808, 89046, 98940, 104760, 110160, 118728, 125712, 131920, 133569, 139680, 148410, 157140, 158304, 178092, 197880, 209520, 220320, 222615, 237456, 251424, 263840, 267138, 296820, 314280, 356184, 395760, 419040, 445230, 474912, 534276, 593640, 628560, 667845, 712368, 791520, 890460, 1068552, 1187280, 1257120, 1335690, 1424736, 1780920, 2137104, 2374560, 2671380, 3561840, 4274208, 5342760, 7123680, 10685520, 21371040]

約数ペア:

[(1, 21371040), (2, 10685520), (3, 7123680), (4, 5342760), (5, 4274208), (6, 3561840), (8, 2671380), (9, 2374560), (10, 2137104), (12, 1780920), (15, 1424736), (16, 1335690), (17, 1257120), (18, 1187280), (20, 1068552), (24, 890460), (27, 791520), (30, 712368), (32, 667845), (34, 628560), (36, 593640), (40, 534276), (45, 474912), (48, 445230), (51, 419040), (54, 395760), (60, 356184), (68, 314280), (72, 296820), (80, 267138), (81, 263840), (85, 251424), (90, 237456), (96, 222615), (97, 220320), (102, 209520), (108, 197880), (120, 178092), (135, 158304), (136, 157140), (144, 148410), (153, 139680), (160, 133569), (162, 131920), (170, 125712), (180, 118728), (194, 110160), (204, 104760), (216, 98940), (240, 89046), (255, 83808), (270, 79152), (272, 78570), (288, 74205), (291, 73440), (306, 69840), (324, 65960), (340, 62856), (360, 59364), (388, 55080), (405, 52768), (408, 52380), (432, 49470), (459, 46560), (480, 44523), (485, 44064), (510, 41904), (540, 39576), (544, 39285), (582, 36720), (612, 34920), (648, 32980), (680, 31428), (720, 29682), (765, 27936), (776, 27540), (810, 26384), (816, 26190), (864, 24735), (873, 24480), (918, 23280), (970, 22032), (1020, 20952), (1080, 19788), (1164, 18360), (1224, 17460), (1296, 16490), (1360, 15714), (1377, 15520), (1440, 14841), (1455, 14688), (1530, 13968), (1552, 13770), (1620, 13192), (1632, 13095), (1649, 12960), (1746, 12240), (1836, 11640), (1940, 11016), (2040, 10476), (2160, 9894), (2295, 9312), (2328, 9180), (2448, 8730), (2592, 8245), (2619, 8160), (2720, 7857), (2754, 7760), (2910, 7344), (3060, 6984), (3104, 6885), (3240, 6596), (3298, 6480), (3492, 6120), (3672, 5820), (3880, 5508), (4080, 5238), (4320, 4947), (4365, 4896), (4590, 4656)]