20687317

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{661}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 25166592

約数和(自身を除く): 4479275

約数列:

[1, 7, 17, 119, 263, 661, 1841, 4471, 4627, 11237, 31297, 78659, 173843, 1216901, 2955331, 20687317]

約数ペア:

[(1, 20687317), (7, 2955331), (17, 1216901), (119, 173843), (263, 78659), (661, 31297), (1841, 11237), (4471, 4627)]