20397494

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{4813}}^1$

素因数の和:4991

約数の個数: 16

約数和(自身を含む): 33158832

約数和(自身を除く): 12761338

約数列:

[1, 2, 13, 26, 163, 326, 2119, 4238, 4813, 9626, 62569, 125138, 784519, 1569038, 10198747, 20397494]

約数ペア:

[(1, 20397494), (2, 10198747), (13, 1569038), (26, 784519), (163, 125138), (326, 62569), (2119, 9626), (4238, 4813)]