21969545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10903}}^1$

素因数の和:10952

約数の個数: 16

約数和(自身を含む): 29309952

約数和(自身を除く): 7340407

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10903, 54515, 141739, 337993, 708695, 1689965, 4393909, 21969545]

約数ペア:

[(1, 21969545), (5, 4393909), (13, 1689965), (31, 708695), (65, 337993), (155, 141739), (403, 54515), (2015, 10903)]