21084310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2053}}^1$

素因数の和:2152

約数の個数: 32

約数和(自身を含む): 41408640

約数和(自身を除く): 20324330

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2053, 2054, 4106, 5135, 10265, 10270, 20530, 26689, 53378, 133445, 162187, 266890, 324374, 810935, 1621870, 2108431, 4216862, 10542155, 21084310]

約数ペア:

[(1, 21084310), (2, 10542155), (5, 4216862), (10, 2108431), (13, 1621870), (26, 810935), (65, 324374), (79, 266890), (130, 162187), (158, 133445), (395, 53378), (790, 26689), (1027, 20530), (2053, 10270), (2054, 10265), (4106, 5135)]