256457040

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{521}}^1$

素因数の和:837

約数の個数: 160

約数和(自身を含む): 913441536

約数和(自身を除く): 656984496

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 293, 336, 420, 521, 560, 586, 840, 879, 1042, 1172, 1465, 1563, 1680, 1758, 2051, 2084, 2344, 2605, 2930, 3126, 3516, 3647, 4102, 4168, 4395, 4688, 5210, 5860, 6153, 6252, 7032, 7294, 7815, 8204, 8336, 8790, 10255, 10420, 10941, 11720, 12306, 12504, 14064, 14588, 15630, 16408, 17580, 18235, 20510, 20840, 21882, 23440, 24612, 25008, 29176, 30765, 31260, 32816, 35160, 36470, 41020, 41680, 43764, 49224, 54705, 58352, 61530, 62520, 70320, 72940, 82040, 87528, 98448, 109410, 123060, 125040, 145880, 152653, 164080, 175056, 218820, 246120, 291760, 305306, 437640, 457959, 492240, 610612, 763265, 875280, 915918, 1068571, 1221224, 1526530, 1831836, 2137142, 2289795, 2442448, 3053060, 3205713, 3663672, 4274284, 4579590, 5342855, 6106120, 6411426, 7327344, 8548568, 9159180, 10685710, 12212240, 12822852, 16028565, 17097136, 18318360, 21371420, 25645704, 32057130, 36636720, 42742840, 51291408, 64114260, 85485680, 128228520, 256457040]

約数ペア:

[(1, 256457040), (2, 128228520), (3, 85485680), (4, 64114260), (5, 51291408), (6, 42742840), (7, 36636720), (8, 32057130), (10, 25645704), (12, 21371420), (14, 18318360), (15, 17097136), (16, 16028565), (20, 12822852), (21, 12212240), (24, 10685710), (28, 9159180), (30, 8548568), (35, 7327344), (40, 6411426), (42, 6106120), (48, 5342855), (56, 4579590), (60, 4274284), (70, 3663672), (80, 3205713), (84, 3053060), (105, 2442448), (112, 2289795), (120, 2137142), (140, 1831836), (168, 1526530), (210, 1221224), (240, 1068571), (280, 915918), (293, 875280), (336, 763265), (420, 610612), (521, 492240), (560, 457959), (586, 437640), (840, 305306), (879, 291760), (1042, 246120), (1172, 218820), (1465, 175056), (1563, 164080), (1680, 152653), (1758, 145880), (2051, 125040), (2084, 123060), (2344, 109410), (2605, 98448), (2930, 87528), (3126, 82040), (3516, 72940), (3647, 70320), (4102, 62520), (4168, 61530), (4395, 58352), (4688, 54705), (5210, 49224), (5860, 43764), (6153, 41680), (6252, 41020), (7032, 36470), (7294, 35160), (7815, 32816), (8204, 31260), (8336, 30765), (8790, 29176), (10255, 25008), (10420, 24612), (10941, 23440), (11720, 21882), (12306, 20840), (12504, 20510), (14064, 18235), (14588, 17580), (15630, 16408)]