21026525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2087}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 28998144

約数和(自身を除く): 7971619

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 2087, 10075, 10435, 27131, 52175, 64697, 135655, 323485, 678275, 841061, 1617425, 4205305, 21026525]

約数ペア:

[(1, 21026525), (5, 4205305), (13, 1617425), (25, 841061), (31, 678275), (65, 323485), (155, 135655), (325, 64697), (403, 52175), (775, 27131), (2015, 10435), (2087, 10075)]