21497858

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1\times {\mathrm{641}}^1$

素因数の和:1093

約数の個数: 16

約数和(自身を含む): 33165720

約数和(自身を除く): 11667862

約数列:

[1, 2, 41, 82, 409, 641, 818, 1282, 16769, 26281, 33538, 52562, 262169, 524338, 10748929, 21497858]

約数ペア:

[(1, 21497858), (2, 10748929), (41, 524338), (82, 262169), (409, 52562), (641, 33538), (818, 26281), (1282, 16769)]