21069399

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{1433}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 31490640

約数和(自身を除く): 10421241

約数列:

[1, 3, 13, 29, 39, 87, 169, 377, 507, 1131, 1433, 4299, 4901, 14703, 18629, 41557, 55887, 124671, 242177, 540241, 726531, 1620723, 7023133, 21069399]

約数ペア:

[(1, 21069399), (3, 7023133), (13, 1620723), (29, 726531), (39, 540241), (87, 242177), (169, 124671), (377, 55887), (507, 41557), (1131, 18629), (1433, 14703), (4299, 4901)]