80904140

素因数分解:

$2^2\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{3583}}^1$

素因数の和:4721

約数の個数: 24

約数和(自身を含む): 170096640

約数和(自身を除く): 89192500

約数列:

[1, 2, 4, 5, 10, 20, 1129, 2258, 3583, 4516, 5645, 7166, 11290, 14332, 17915, 22580, 35830, 71660, 4045207, 8090414, 16180828, 20226035, 40452070, 80904140]

約数ペア:

[(1, 80904140), (2, 40452070), (4, 20226035), (5, 16180828), (10, 8090414), (20, 4045207), (1129, 71660), (2258, 35830), (3583, 22580), (4516, 17915), (5645, 14332), (7166, 11290)]