20188905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3947}}^1$

素因数の和:3997

約数の個数: 32

約数和(自身を含む): 36384768

約数和(自身を除く): 16195863

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 3947, 5115, 11841, 19735, 43417, 59205, 122357, 130251, 217085, 367071, 611785, 651255, 1345927, 1835355, 4037781, 6729635, 20188905]

約数ペア:

[(1, 20188905), (3, 6729635), (5, 4037781), (11, 1835355), (15, 1345927), (31, 651255), (33, 611785), (55, 367071), (93, 217085), (155, 130251), (165, 122357), (341, 59205), (465, 43417), (1023, 19735), (1705, 11841), (3947, 5115)]