21482725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 29283840

約数和(自身を除く): 7801115

約数列:

[1, 5, 11, 25, 55, 191, 275, 409, 955, 2045, 2101, 4499, 4775, 10225, 10505, 22495, 52525, 78119, 112475, 390595, 859309, 1952975, 4296545, 21482725]

約数ペア:

[(1, 21482725), (5, 4296545), (11, 1952975), (25, 859309), (55, 390595), (191, 112475), (275, 78119), (409, 52525), (955, 22495), (2045, 10505), (2101, 10225), (4499, 4775)]