18955970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{443}}^1$

素因数の和:850

約数の個数: 32

約数和(自身を含む): 37402560

約数和(自身を除く): 18446590

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 389, 443, 778, 886, 1945, 2215, 3890, 4279, 4430, 4873, 8558, 9746, 21395, 24365, 42790, 48730, 172327, 344654, 861635, 1723270, 1895597, 3791194, 9477985, 18955970]

約数ペア:

[(1, 18955970), (2, 9477985), (5, 3791194), (10, 1895597), (11, 1723270), (22, 861635), (55, 344654), (110, 172327), (389, 48730), (443, 42790), (778, 24365), (886, 21395), (1945, 9746), (2215, 8558), (3890, 4873), (4279, 4430)]