20041931

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 25510464

約数和(自身を除く): 5468533

約数列:

[1, 7, 13, 49, 73, 91, 431, 511, 637, 949, 3017, 3577, 5603, 6643, 21119, 31463, 39221, 46501, 220241, 274547, 409019, 1541687, 2863133, 20041931]

約数ペア:

[(1, 20041931), (7, 2863133), (13, 1541687), (49, 409019), (73, 274547), (91, 220241), (431, 46501), (511, 39221), (637, 31463), (949, 21119), (3017, 6643), (3577, 5603)]