21880885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10859}}^1$

素因数の和:10908

約数の個数: 16

約数和(自身を含む): 29191680

約数和(自身を除く): 7310795

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10859, 54295, 141167, 336629, 705835, 1683145, 4376177, 21880885]

約数ペア:

[(1, 21880885), (5, 4376177), (13, 1683145), (31, 705835), (65, 336629), (155, 141167), (403, 54295), (2015, 10859)]