20405659

素因数分解:

${\mathrm{41}}^2\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:342

約数の個数: 12

約数和(自身を含む): 21365200

約数和(自身を除く): 959541

約数列:

[1, 41, 61, 199, 1681, 2501, 8159, 12139, 102541, 334519, 497699, 20405659]

約数ペア:

[(1, 20405659), (41, 497699), (61, 334519), (199, 102541), (1681, 12139), (2501, 8159)]