21252215

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{1511}}^1$

素因数の和:1642

約数の個数: 16

約数和(自身を含む): 26671680

約数和(自身を除く): 5419465

約数列:

[1, 5, 29, 97, 145, 485, 1511, 2813, 7555, 14065, 43819, 146567, 219095, 732835, 4250443, 21252215]

約数ペア:

[(1, 21252215), (5, 4250443), (29, 732835), (97, 219095), (145, 146567), (485, 43819), (1511, 14065), (2813, 7555)]