21268037

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{571}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 25863552

約数和(自身を除く): 4595515

約数列:

[1, 7, 17, 119, 313, 571, 2191, 3997, 5321, 9707, 37247, 67949, 178723, 1251061, 3038291, 21268037]

約数ペア:

[(1, 21268037), (7, 3038291), (17, 1251061), (119, 178723), (313, 67949), (571, 37247), (2191, 9707), (3997, 5321)]