20966075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2081}}^1$

素因数の和:2135

約数の個数: 24

約数和(自身を含む): 28914816

約数和(自身を除く): 7948741

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2081, 10075, 10405, 27053, 52025, 64511, 135265, 322555, 676325, 838643, 1612775, 4193215, 20966075]

約数ペア:

[(1, 20966075), (5, 4193215), (13, 1612775), (25, 838643), (31, 676325), (65, 322555), (155, 135265), (325, 64511), (403, 52025), (775, 27053), (2015, 10405), (2081, 10075)]