8537980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^2$

素因数の和:414

約数の個数: 36

約数和(自身を含む): 19659528

約数和(自身を除く): 11121548

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 1970, 2167, 3940, 4334, 8668, 10835, 21670, 38809, 43340, 77618, 155236, 194045, 388090, 426899, 776180, 853798, 1707596, 2134495, 4268990, 8537980]

約数ペア:

[(1, 8537980), (2, 4268990), (4, 2134495), (5, 1707596), (10, 853798), (11, 776180), (20, 426899), (22, 388090), (44, 194045), (55, 155236), (110, 77618), (197, 43340), (220, 38809), (394, 21670), (788, 10835), (985, 8668), (1970, 4334), (2167, 3940)]