21815003

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1087}}^1$

素因数の和:1202

約数の個数: 16

約数和(自身を含む): 25903104

約数和(自身を除く): 4088101

約数列:

[1, 7, 47, 61, 329, 427, 1087, 2867, 7609, 20069, 51089, 66307, 357623, 464149, 3116429, 21815003]

約数ペア:

[(1, 21815003), (7, 3116429), (47, 464149), (61, 357623), (329, 66307), (427, 51089), (1087, 20069), (2867, 7609)]