21086140

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2287}}^1$

素因数の和:2757

約数の個数: 24

約数和(自身を含む): 44396352

約数和(自身を除く): 23310212

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2287, 2305, 4574, 4610, 9148, 9220, 11435, 22870, 45740, 1054307, 2108614, 4217228, 5271535, 10543070, 21086140]

約数ペア:

[(1, 21086140), (2, 10543070), (4, 5271535), (5, 4217228), (10, 2108614), (20, 1054307), (461, 45740), (922, 22870), (1844, 11435), (2287, 9220), (2305, 9148), (4574, 4610)]