21051140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{929}}^1$

素因数の和:1052

約数の個数: 48

約数和(自身を含む): 48746880

約数和(自身を除く): 27695740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 412, 515, 929, 1030, 1133, 1858, 2060, 2266, 3716, 4532, 4645, 5665, 9290, 10219, 11330, 18580, 20438, 22660, 40876, 51095, 95687, 102190, 191374, 204380, 382748, 478435, 956870, 1052557, 1913740, 2105114, 4210228, 5262785, 10525570, 21051140]

約数ペア:

[(1, 21051140), (2, 10525570), (4, 5262785), (5, 4210228), (10, 2105114), (11, 1913740), (20, 1052557), (22, 956870), (44, 478435), (55, 382748), (103, 204380), (110, 191374), (206, 102190), (220, 95687), (412, 51095), (515, 40876), (929, 22660), (1030, 20438), (1133, 18580), (1858, 11330), (2060, 10219), (2266, 9290), (3716, 5665), (4532, 4645)]