20836940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24229}}^1$

素因数の和:24281

約数の個数: 24

約数和(自身を含む): 44777040

約数和(自身を除く): 23940100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24229, 48458, 96916, 121145, 242290, 484580, 1041847, 2083694, 4167388, 5209235, 10418470, 20836940]

約数ペア:

[(1, 20836940), (2, 10418470), (4, 5209235), (5, 4167388), (10, 2083694), (20, 1041847), (43, 484580), (86, 242290), (172, 121145), (215, 96916), (430, 48458), (860, 24229)]