20937969

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2671}}^1$

素因数の和:2757

約数の個数: 24

約数和(自身を含む): 33068672

約数和(自身を除く): 12130703

約数列:

[1, 3, 9, 13, 39, 67, 117, 201, 603, 871, 2613, 2671, 7839, 8013, 24039, 34723, 104169, 178957, 312507, 536871, 1610613, 2326441, 6979323, 20937969]

約数ペア:

[(1, 20937969), (3, 6979323), (9, 2326441), (13, 1610613), (39, 536871), (67, 312507), (117, 178957), (201, 104169), (603, 34723), (871, 24039), (2613, 8013), (2671, 7839)]