21131289080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48025657}}^1$

素因数の和:48025679

約数の個数: 32

約数和(自身を含む): 51867710640

約数和(自身を除く): 30736421560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48025657, 96051314, 192102628, 240128285, 384205256, 480256570, 528282227, 960513140, 1056564454, 1921026280, 2113128908, 2641411135, 4226257816, 5282822270, 10565644540, 21131289080]

約数ペア:

[(1, 21131289080), (2, 10565644540), (4, 5282822270), (5, 4226257816), (8, 2641411135), (10, 2113128908), (11, 1921026280), (20, 1056564454), (22, 960513140), (40, 528282227), (44, 480256570), (55, 384205256), (88, 240128285), (110, 192102628), (220, 96051314), (440, 48025657)]