20564518

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{8887}}^1$

素因数の和:8991

約数の個数: 16

約数和(自身を含む): 33596640

約数和(自身を除く): 13032122

約数列:

[1, 2, 13, 26, 89, 178, 1157, 2314, 8887, 17774, 115531, 231062, 790943, 1581886, 10282259, 20564518]

約数ペア:

[(1, 20564518), (2, 10282259), (13, 1581886), (26, 790943), (89, 231062), (178, 115531), (1157, 17774), (2314, 8887)]