20152769

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1861}}^1$

素因数の和:1905

約数の個数: 24

約数和(自身を含む): 26745768

約数和(自身を除く): 6592999

約数列:

[1, 7, 13, 17, 49, 91, 119, 221, 637, 833, 1547, 1861, 10829, 13027, 24193, 31637, 91189, 169351, 221459, 411281, 1185457, 1550213, 2878967, 20152769]

約数ペア:

[(1, 20152769), (7, 2878967), (13, 1550213), (17, 1185457), (49, 411281), (91, 221459), (119, 169351), (221, 91189), (637, 31637), (833, 24193), (1547, 13027), (1861, 10829)]