90008821

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 109007360

約数和(自身を除く): 18998539

約数列:

[1, 7, 23, 109, 161, 223, 529, 763, 1561, 2507, 3703, 5129, 17549, 24307, 35903, 57661, 117967, 170149, 403627, 559061, 825769, 3913427, 12858403, 90008821]

約数ペア:

[(1, 90008821), (7, 12858403), (23, 3913427), (109, 825769), (161, 559061), (223, 403627), (529, 170149), (763, 117967), (1561, 57661), (2507, 35903), (3703, 24307), (5129, 17549)]