21527305

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{449}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5083895

約数列:

[1, 5, 43, 215, 223, 449, 1115, 2245, 9589, 19307, 47945, 96535, 100127, 500635, 4305461, 21527305]

約数ペア:

[(1, 21527305), (5, 4305461), (43, 500635), (215, 100127), (223, 96535), (449, 47945), (1115, 19307), (2245, 9589)]