19974577

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 23569920

約数和(自身を除く): 3595343

約数列:

[1, 7, 47, 109, 329, 557, 763, 3899, 5123, 26179, 35861, 60713, 183253, 424991, 2853511, 19974577]

約数ペア:

[(1, 19974577), (7, 2853511), (47, 424991), (109, 183253), (329, 60713), (557, 35861), (763, 26179), (3899, 5123)]