90905680

素因数分解:

$2^4\times 5^1\times {\mathrm{701}}^1\times {\mathrm{1621}}^1$

素因数の和:2335

約数の個数: 40

約数和(自身を含む): 211787784

約数和(自身を除く): 120882104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 701, 1402, 1621, 2804, 3242, 3505, 5608, 6484, 7010, 8105, 11216, 12968, 14020, 16210, 25936, 28040, 32420, 56080, 64840, 129680, 1136321, 2272642, 4545284, 5681605, 9090568, 11363210, 18181136, 22726420, 45452840, 90905680]

約数ペア:

[(1, 90905680), (2, 45452840), (4, 22726420), (5, 18181136), (8, 11363210), (10, 9090568), (16, 5681605), (20, 4545284), (40, 2272642), (80, 1136321), (701, 129680), (1402, 64840), (1621, 56080), (2804, 32420), (3242, 28040), (3505, 25936), (5608, 16210), (6484, 14020), (7010, 12968), (8105, 11216)]