21245991

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{6121}}^1$

素因数の和:6226

約数の個数: 16

約数和(自身を含む): 30854880

約数和(自身を除く): 9608889

約数列:

[1, 3, 13, 39, 89, 267, 1157, 3471, 6121, 18363, 79573, 238719, 544769, 1634307, 7081997, 21245991]

約数ペア:

[(1, 21245991), (3, 7081997), (13, 1634307), (39, 544769), (89, 238719), (267, 79573), (1157, 18363), (3471, 6121)]