20525999

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^3\times {\mathrm{53}}^1$

素因数の和:159

約数の個数: 16

約数和(自身を含む): 23272704

約数和(自身を除く): 2746705

約数列:

[1, 13, 31, 53, 403, 689, 961, 1643, 12493, 21359, 29791, 50933, 387283, 662129, 1578923, 20525999]

約数ペア:

[(1, 20525999), (13, 1578923), (31, 662129), (53, 387283), (403, 50933), (689, 29791), (961, 21359), (1643, 12493)]