405321280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:517

約数の個数: 224

約数和(自身を含む): 1228953600

約数和(自身を除く): 823632320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 32, 35, 40, 52, 56, 62, 64, 65, 70, 80, 91, 104, 112, 124, 130, 140, 155, 160, 182, 208, 217, 224, 248, 260, 280, 310, 320, 364, 403, 416, 434, 448, 449, 455, 496, 520, 560, 620, 728, 806, 832, 868, 898, 910, 992, 1040, 1085, 1120, 1240, 1456, 1612, 1736, 1796, 1820, 1984, 2015, 2080, 2170, 2240, 2245, 2480, 2821, 2912, 3143, 3224, 3472, 3592, 3640, 4030, 4160, 4340, 4490, 4960, 5642, 5824, 5837, 6286, 6448, 6944, 7184, 7280, 8060, 8680, 8980, 9920, 11284, 11674, 12572, 12896, 13888, 13919, 14105, 14368, 14560, 15715, 16120, 17360, 17960, 22568, 23348, 25144, 25792, 27838, 28210, 28736, 29120, 29185, 31430, 32240, 34720, 35920, 40859, 45136, 46696, 50288, 55676, 56420, 58370, 62860, 64480, 69440, 69595, 71840, 81718, 90272, 93392, 97433, 100576, 111352, 112840, 116740, 125720, 128960, 139190, 143680, 163436, 180544, 180947, 186784, 194866, 201152, 204295, 222704, 225680, 233480, 251440, 278380, 326872, 361894, 373568, 389732, 408590, 445408, 451360, 466960, 487165, 502880, 556760, 653744, 723788, 779464, 817180, 890816, 902720, 904735, 933920, 974330, 1005760, 1113520, 1266629, 1307488, 1447576, 1558928, 1634360, 1809470, 1867840, 1948660, 2227040, 2533258, 2614976, 2895152, 3117856, 3268720, 3618940, 3897320, 4454080, 5066516, 5790304, 6235712, 6333145, 6537440, 7237880, 7794640, 10133032, 11580608, 12666290, 13074880, 14475760, 15589280, 20266064, 25332580, 28951520, 31178560, 40532128, 50665160, 57903040, 81064256, 101330320, 202660640, 405321280]

約数ペア:

[(1, 405321280), (2, 202660640), (4, 101330320), (5, 81064256), (7, 57903040), (8, 50665160), (10, 40532128), (13, 31178560), (14, 28951520), (16, 25332580), (20, 20266064), (26, 15589280), (28, 14475760), (31, 13074880), (32, 12666290), (35, 11580608), (40, 10133032), (52, 7794640), (56, 7237880), (62, 6537440), (64, 6333145), (65, 6235712), (70, 5790304), (80, 5066516), (91, 4454080), (104, 3897320), (112, 3618940), (124, 3268720), (130, 3117856), (140, 2895152), (155, 2614976), (160, 2533258), (182, 2227040), (208, 1948660), (217, 1867840), (224, 1809470), (248, 1634360), (260, 1558928), (280, 1447576), (310, 1307488), (320, 1266629), (364, 1113520), (403, 1005760), (416, 974330), (434, 933920), (448, 904735), (449, 902720), (455, 890816), (496, 817180), (520, 779464), (560, 723788), (620, 653744), (728, 556760), (806, 502880), (832, 487165), (868, 466960), (898, 451360), (910, 445408), (992, 408590), (1040, 389732), (1085, 373568), (1120, 361894), (1240, 326872), (1456, 278380), (1612, 251440), (1736, 233480), (1796, 225680), (1820, 222704), (1984, 204295), (2015, 201152), (2080, 194866), (2170, 186784), (2240, 180947), (2245, 180544), (2480, 163436), (2821, 143680), (2912, 139190), (3143, 128960), (3224, 125720), (3472, 116740), (3592, 112840), (3640, 111352), (4030, 100576), (4160, 97433), (4340, 93392), (4490, 90272), (4960, 81718), (5642, 71840), (5824, 69595), (5837, 69440), (6286, 64480), (6448, 62860), (6944, 58370), (7184, 56420), (7280, 55676), (8060, 50288), (8680, 46696), (8980, 45136), (9920, 40859), (11284, 35920), (11674, 34720), (12572, 32240), (12896, 31430), (13888, 29185), (13919, 29120), (14105, 28736), (14368, 28210), (14560, 27838), (15715, 25792), (16120, 25144), (17360, 23348), (17960, 22568)]