1212778820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{90371}}^1$

素因数の和:90452

約数の個数: 48

約数和(自身を含む): 2823944256

約数和(自身を除く): 1611165436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 6710, 13420, 90371, 180742, 361484, 451855, 903710, 994081, 1807420, 1988162, 3976324, 4970405, 5512631, 9940810, 11025262, 19881620, 22050524, 27563155, 55126310, 60638941, 110252620, 121277882, 242555764, 303194705, 606389410, 1212778820]

約数ペア:

[(1, 1212778820), (2, 606389410), (4, 303194705), (5, 242555764), (10, 121277882), (11, 110252620), (20, 60638941), (22, 55126310), (44, 27563155), (55, 22050524), (61, 19881620), (110, 11025262), (122, 9940810), (220, 5512631), (244, 4970405), (305, 3976324), (610, 1988162), (671, 1807420), (1220, 994081), (1342, 903710), (2684, 451855), (3355, 361484), (6710, 180742), (13420, 90371)]