77128840

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{3701}}^1$

素因数の和:4233

約数の個数: 32

約数和(自身を含む): 173919960

約数和(自身を除く): 96791120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 3701, 4168, 5210, 7402, 10420, 14804, 18505, 20840, 29608, 37010, 74020, 148040, 1928221, 3856442, 7712884, 9641105, 15425768, 19282210, 38564420, 77128840]

約数ペア:

[(1, 77128840), (2, 38564420), (4, 19282210), (5, 15425768), (8, 9641105), (10, 7712884), (20, 3856442), (40, 1928221), (521, 148040), (1042, 74020), (2084, 37010), (2605, 29608), (3701, 20840), (4168, 18505), (5210, 14804), (7402, 10420)]