20405661

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{8513}}^1$

素因数の和:8580

約数の個数: 16

約数和(自身を含む): 29424384

約数和(自身を除く): 9018723

約数列:

[1, 3, 17, 47, 51, 141, 799, 2397, 8513, 25539, 144721, 400111, 434163, 1200333, 6801887, 20405661]

約数ペア:

[(1, 20405661), (3, 6801887), (17, 1200333), (47, 434163), (51, 400111), (141, 144721), (799, 25539), (2397, 8513)]