81226160

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6229}}^1$

素因数の和:6405

約数の個数: 40

約数和(自身を含む): 190039920

約数和(自身を除く): 108813760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6229, 6520, 12458, 13040, 24916, 31145, 49832, 62290, 99664, 124580, 249160, 498320, 1015327, 2030654, 4061308, 5076635, 8122616, 10153270, 16245232, 20306540, 40613080, 81226160]

約数ペア:

[(1, 81226160), (2, 40613080), (4, 20306540), (5, 16245232), (8, 10153270), (10, 8122616), (16, 5076635), (20, 4061308), (40, 2030654), (80, 1015327), (163, 498320), (326, 249160), (652, 124580), (815, 99664), (1304, 62290), (1630, 49832), (2608, 31145), (3260, 24916), (6229, 13040), (6520, 12458)]