20975830

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{48781}}^1$

素因数の和:48831

約数の個数: 16

約数和(自身を含む): 38635344

約数和(自身を除く): 17659514

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 48781, 97562, 243905, 487810, 2097583, 4195166, 10487915, 20975830]

約数ペア:

[(1, 20975830), (2, 10487915), (5, 4195166), (10, 2097583), (43, 487810), (86, 243905), (215, 97562), (430, 48781)]