21373455

素因数分解:

$3^1\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1571}}^1$

素因数の和:2486

約数の個数: 16

約数和(自身を含む): 34257024

約数和(自身を除く): 12883569

約数列:

[1, 3, 5, 15, 907, 1571, 2721, 4535, 4713, 7855, 13605, 23565, 1424897, 4274691, 7124485, 21373455]

約数ペア:

[(1, 21373455), (3, 7124485), (5, 4274691), (15, 1424897), (907, 23565), (1571, 13605), (2721, 7855), (4535, 4713)]