21715490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{727}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 40884480

約数和(自身を除く): 19168990

約数列:

[1, 2, 5, 10, 29, 58, 103, 145, 206, 290, 515, 727, 1030, 1454, 2987, 3635, 5974, 7270, 14935, 21083, 29870, 42166, 74881, 105415, 149762, 210830, 374405, 748810, 2171549, 4343098, 10857745, 21715490]

約数ペア:

[(1, 21715490), (2, 10857745), (5, 4343098), (10, 2171549), (29, 748810), (58, 374405), (103, 210830), (145, 149762), (206, 105415), (290, 74881), (515, 42166), (727, 29870), (1030, 21083), (1454, 14935), (2987, 7270), (3635, 5974)]