21653890

素因数分解:

$2^1\times 5^1\times {\mathrm{701}}^1\times {\mathrm{3089}}^1$

素因数の和:3797

約数の個数: 16

約数和(自身を含む): 39045240

約数和(自身を除く): 17391350

約数列:

[1, 2, 5, 10, 701, 1402, 3089, 3505, 6178, 7010, 15445, 30890, 2165389, 4330778, 10826945, 21653890]

約数ペア:

[(1, 21653890), (2, 10826945), (5, 4330778), (10, 2165389), (701, 30890), (1402, 15445), (3089, 7010), (3505, 6178)]