20121185740

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1240517}}^1$

素因数の和:1241337

約数の個数: 24

約数和(自身を含む): 42306625872

約数和(自身を除く): 22185440132

約数列:

[1, 2, 4, 5, 10, 20, 811, 1622, 3244, 4055, 8110, 16220, 1240517, 2481034, 4962068, 6202585, 12405170, 24810340, 1006059287, 2012118574, 4024237148, 5030296435, 10060592870, 20121185740]

約数ペア:

[(1, 20121185740), (2, 10060592870), (4, 5030296435), (5, 4024237148), (10, 2012118574), (20, 1006059287), (811, 24810340), (1622, 12405170), (3244, 6202585), (4055, 4962068), (8110, 2481034), (16220, 1240517)]