19814405

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 26088480

約数和(自身を除く): 6274075

約数列:

[1, 5, 13, 65, 131, 169, 179, 655, 845, 895, 1703, 2327, 8515, 11635, 22139, 23449, 30251, 110695, 117245, 151255, 304837, 1524185, 3962881, 19814405]

約数ペア:

[(1, 19814405), (5, 3962881), (13, 1524185), (65, 304837), (131, 151255), (169, 117245), (179, 110695), (655, 30251), (845, 23449), (895, 22139), (1703, 11635), (2327, 8515)]