12220815

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18947}}^1$

素因数の和:18998

約数の個数: 16

約数和(自身を含む): 20009088

約数和(自身を除く): 7788273

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 18947, 56841, 94735, 284205, 814721, 2444163, 4073605, 12220815]

約数ペア:

[(1, 12220815), (3, 4073605), (5, 2444163), (15, 814721), (43, 284205), (129, 94735), (215, 56841), (645, 18947)]