21032825

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:458

約数の個数: 36

約数和(自身を含む): 30427740

約数和(自身を除く): 9394915

約数列:

[1, 5, 11, 17, 25, 55, 85, 121, 187, 275, 409, 425, 605, 935, 2045, 2057, 3025, 4499, 4675, 6953, 10225, 10285, 22495, 34765, 49489, 51425, 76483, 112475, 173825, 247445, 382415, 841313, 1237225, 1912075, 4206565, 21032825]

約数ペア:

[(1, 21032825), (5, 4206565), (11, 1912075), (17, 1237225), (25, 841313), (55, 382415), (85, 247445), (121, 173825), (187, 112475), (275, 76483), (409, 51425), (425, 49489), (605, 34765), (935, 22495), (2045, 10285), (2057, 10225), (3025, 6953), (4499, 4675)]