21387769

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{307}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 24216192

約数和(自身を除く): 2828423

約数列:

[1, 13, 23, 233, 299, 307, 3029, 3991, 5359, 7061, 69667, 71531, 91793, 929903, 1645213, 21387769]

約数ペア:

[(1, 21387769), (13, 1645213), (23, 929903), (233, 91793), (299, 71531), (307, 69667), (3029, 7061), (3991, 5359)]