20613868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{1087}}^1$

素因数の和:1533

約数の個数: 24

約数和(自身を含む): 39481344

約数和(自身を除く): 18867476

約数列:

[1, 2, 4, 11, 22, 44, 431, 862, 1087, 1724, 2174, 4348, 4741, 9482, 11957, 18964, 23914, 47828, 468497, 936994, 1873988, 5153467, 10306934, 20613868]

約数ペア:

[(1, 20613868), (2, 10306934), (4, 5153467), (11, 1873988), (22, 936994), (44, 468497), (431, 47828), (862, 23914), (1087, 18964), (1724, 11957), (2174, 9482), (4348, 4741)]