21615610

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52721}}^1$

素因数の和:52769

約数の個数: 16

約数和(自身を含む): 39857832

約数和(自身を除く): 18242222

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52721, 105442, 263605, 527210, 2161561, 4323122, 10807805, 21615610]

約数ペア:

[(1, 21615610), (2, 10807805), (5, 4323122), (10, 2161561), (41, 527210), (82, 263605), (205, 105442), (410, 52721)]