21005930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4441}}^1$

素因数の和:4502

約数の個数: 32

約数和(自身を含む): 42216768

約数和(自身を除く): 21210838

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4441, 4730, 8882, 22205, 44410, 48851, 97702, 190963, 244255, 381926, 488510, 954815, 1909630, 2100593, 4201186, 10502965, 21005930]

約数ペア:

[(1, 21005930), (2, 10502965), (5, 4201186), (10, 2100593), (11, 1909630), (22, 954815), (43, 488510), (55, 381926), (86, 244255), (110, 190963), (215, 97702), (430, 48851), (473, 44410), (946, 22205), (2365, 8882), (4441, 4730)]