20686913

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1609}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 23802240

約数和(自身を除く): 3115327

約数列:

[1, 13, 23, 43, 299, 559, 989, 1609, 12857, 20917, 37007, 69187, 481091, 899431, 1591301, 20686913]

約数ペア:

[(1, 20686913), (13, 1591301), (23, 899431), (43, 481091), (299, 69187), (559, 37007), (989, 20917), (1609, 12857)]