20989240

素因数分解:

$2^3\times 5^1\times {\mathrm{524731}}^1$

素因数の和:524742

約数の個数: 16

約数和(自身を含む): 47225880

約数和(自身を除く): 26236640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 524731, 1049462, 2098924, 2623655, 4197848, 5247310, 10494620, 20989240]

約数ペア:

[(1, 20989240), (2, 10494620), (4, 5247310), (5, 4197848), (8, 2623655), (10, 2098924), (20, 1049462), (40, 524731)]