20187280

素因数分解:

$2^4\times 5^1\times {\mathrm{252341}}^1$

素因数の和:252354

約数の個数: 20

約数和(自身を含む): 46935612

約数和(自身を除く): 26748332

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252341, 504682, 1009364, 1261705, 2018728, 2523410, 4037456, 5046820, 10093640, 20187280]

約数ペア:

[(1, 20187280), (2, 10093640), (4, 5046820), (5, 4037456), (8, 2523410), (10, 2018728), (16, 1261705), (20, 1009364), (40, 504682), (80, 252341)]