21556493

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2293}}^1$

素因数の和:2396

約数の個数: 16

約数和(自身を含む): 26426880

約数和(自身を除く): 4870387

約数列:

[1, 7, 17, 79, 119, 553, 1343, 2293, 9401, 16051, 38981, 181147, 272867, 1268029, 3079499, 21556493]

約数ペア:

[(1, 21556493), (7, 3079499), (17, 1268029), (79, 272867), (119, 181147), (553, 38981), (1343, 16051), (2293, 9401)]