13381815

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20747}}^1$

素因数の和:20798

約数の個数: 16

約数和(自身を含む): 21909888

約数和(自身を除く): 8528073

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 20747, 62241, 103735, 311205, 892121, 2676363, 4460605, 13381815]

約数ペア:

[(1, 13381815), (3, 4460605), (5, 2676363), (15, 892121), (43, 311205), (129, 103735), (215, 62241), (645, 20747)]