20515313

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1493}}^1$

素因数の和:1664

約数の個数: 16

約数和(自身を含む): 25433856

約数和(自身を除く): 4918543

約数列:

[1, 7, 13, 91, 151, 1057, 1493, 1963, 10451, 13741, 19409, 135863, 225443, 1578101, 2930759, 20515313]

約数ペア:

[(1, 20515313), (7, 2930759), (13, 1578101), (91, 225443), (151, 135863), (1057, 19409), (1493, 13741), (1963, 10451)]