21786685

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{1549}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 27342000

約数和(自身を除く): 5555315

約数列:

[1, 5, 29, 97, 145, 485, 1549, 2813, 7745, 14065, 44921, 150253, 224605, 751265, 4357337, 21786685]

約数ペア:

[(1, 21786685), (5, 4357337), (29, 751265), (97, 224605), (145, 150253), (485, 44921), (1549, 14065), (2813, 7745)]