20686631

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:574

約数の個数: 16

約数和(自身を含む): 24261120

約数和(自身を除く): 3574489

約数列:

[1, 7, 71, 107, 389, 497, 749, 2723, 7597, 27619, 41623, 53179, 193333, 291361, 2955233, 20686631]

約数ペア:

[(1, 20686631), (7, 2955233), (71, 291361), (107, 193333), (389, 53179), (497, 41623), (749, 27619), (2723, 7597)]