90256280

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{4051}}^1$

素因数の和:4619

約数の個数: 32

約数和(自身を含む): 203491440

約数和(自身を除く): 113235160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 2228, 2785, 4051, 4456, 5570, 8102, 11140, 16204, 20255, 22280, 32408, 40510, 81020, 162040, 2256407, 4512814, 9025628, 11282035, 18051256, 22564070, 45128140, 90256280]

約数ペア:

[(1, 90256280), (2, 45128140), (4, 22564070), (5, 18051256), (8, 11282035), (10, 9025628), (20, 4512814), (40, 2256407), (557, 162040), (1114, 81020), (2228, 40510), (2785, 32408), (4051, 22280), (4456, 20255), (5570, 16204), (8102, 11140)]