21130031

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4157}}^1$

素因数の和:4210

約数の個数: 16

約数和(自身を含む): 25147584

約数和(自身を除く): 4017553

約数列:

[1, 13, 17, 23, 221, 299, 391, 4157, 5083, 54041, 70669, 95611, 918697, 1242943, 1625387, 21130031]

約数ペア:

[(1, 21130031), (13, 1625387), (17, 1242943), (23, 918697), (221, 95611), (299, 70669), (391, 54041), (4157, 5083)]