256789680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{152851}}^1$

素因数の和:152874

約数の個数: 80

約数和(自身を含む): 909775104

約数和(自身を除く): 652985424

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, 336, 420, 560, 840, 1680, 152851, 305702, 458553, 611404, 764255, 917106, 1069957, 1222808, 1528510, 1834212, 2139914, 2292765, 2445616, 3057020, 3209871, 3668424, 4279828, 4585530, 5349785, 6114040, 6419742, 7336848, 8559656, 9171060, 10699570, 12228080, 12839484, 16049355, 17119312, 18342120, 21399140, 25678968, 32098710, 36684240, 42798280, 51357936, 64197420, 85596560, 128394840, 256789680]

約数ペア:

[(1, 256789680), (2, 128394840), (3, 85596560), (4, 64197420), (5, 51357936), (6, 42798280), (7, 36684240), (8, 32098710), (10, 25678968), (12, 21399140), (14, 18342120), (15, 17119312), (16, 16049355), (20, 12839484), (21, 12228080), (24, 10699570), (28, 9171060), (30, 8559656), (35, 7336848), (40, 6419742), (42, 6114040), (48, 5349785), (56, 4585530), (60, 4279828), (70, 3668424), (80, 3209871), (84, 3057020), (105, 2445616), (112, 2292765), (120, 2139914), (140, 1834212), (168, 1528510), (210, 1222808), (240, 1069957), (280, 917106), (336, 764255), (420, 611404), (560, 458553), (840, 305702), (1680, 152851)]