21031888580

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2497849}}^1$

素因数の和:2498279

約数の個数: 24

約数和(自身を含む): 44271893400

約数和(自身を除く): 23240004820

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 2497849, 4995698, 9991396, 12489245, 24978490, 49956980, 1051594429, 2103188858, 4206377716, 5257972145, 10515944290, 21031888580]

約数ペア:

[(1, 21031888580), (2, 10515944290), (4, 5257972145), (5, 4206377716), (10, 2103188858), (20, 1051594429), (421, 49956980), (842, 24978490), (1684, 12489245), (2105, 9991396), (4210, 4995698), (8420, 2497849)]