20873480

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{827}}^1$

素因数の和:1469

約数の個数: 32

約数和(自身を含む): 47096640

約数和(自身を除く): 26223160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 827, 1262, 1654, 2524, 3155, 3308, 4135, 5048, 6310, 6616, 8270, 12620, 16540, 25240, 33080, 521837, 1043674, 2087348, 2609185, 4174696, 5218370, 10436740, 20873480]

約数ペア:

[(1, 20873480), (2, 10436740), (4, 5218370), (5, 4174696), (8, 2609185), (10, 2087348), (20, 1043674), (40, 521837), (631, 33080), (827, 25240), (1262, 16540), (1654, 12620), (2524, 8270), (3155, 6616), (3308, 6310), (4135, 5048)]