21219772

素因数分解:

$2^2\times 7^1\times {\mathrm{359}}^1\times {\mathrm{2111}}^1$

素因数の和:2481

約数の個数: 24

約数和(自身を含む): 42577920

約数和(自身を除く): 21358148

約数列:

[1, 2, 4, 7, 14, 28, 359, 718, 1436, 2111, 2513, 4222, 5026, 8444, 10052, 14777, 29554, 59108, 757849, 1515698, 3031396, 5304943, 10609886, 21219772]

約数ペア:

[(1, 21219772), (2, 10609886), (4, 5304943), (7, 3031396), (14, 1515698), (28, 757849), (359, 59108), (718, 29554), (1436, 14777), (2111, 10052), (2513, 8444), (4222, 5026)]