128528991

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1489}}^1$

素因数の和:1660

約数の個数: 32

約数和(自身を含む): 200256000

約数和(自身を除く): 71727009

約数列:

[1, 3, 9, 23, 27, 69, 139, 207, 417, 621, 1251, 1489, 3197, 3753, 4467, 9591, 13401, 28773, 34247, 40203, 86319, 102741, 206971, 308223, 620913, 924669, 1862739, 4760333, 5588217, 14280999, 42842997, 128528991]

約数ペア:

[(1, 128528991), (3, 42842997), (9, 14280999), (23, 5588217), (27, 4760333), (69, 1862739), (139, 924669), (207, 620913), (417, 308223), (621, 206971), (1251, 102741), (1489, 86319), (3197, 40203), (3753, 34247), (4467, 28773), (9591, 13401)]