12640227

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{571}}^1$

素因数の和:778

約数の個数: 16

約数和(自身を含む): 17352192

約数和(自身を除く): 4711965

約数列:

[1, 3, 47, 141, 157, 471, 571, 1713, 7379, 22137, 26837, 80511, 89647, 268941, 4213409, 12640227]

約数ペア:

[(1, 12640227), (3, 4213409), (47, 268941), (141, 89647), (157, 80511), (471, 26837), (571, 22137), (1713, 7379)]