20987226

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89689}}^1$

素因数の和:89710

約数の個数: 24

約数和(自身を含む): 48970740

約数和(自身を除く): 27983514

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 89689, 179378, 269067, 538134, 807201, 1165957, 1614402, 2331914, 3497871, 6995742, 10493613, 20987226]

約数ペア:

[(1, 20987226), (2, 10493613), (3, 6995742), (6, 3497871), (9, 2331914), (13, 1614402), (18, 1165957), (26, 807201), (39, 538134), (78, 269067), (117, 179378), (234, 89689)]