20197790

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{11159}}^1$

素因数の和:11347

約数の個数: 16

約数和(自身を含む): 36560160

約数和(自身を除く): 16362370

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 11159, 22318, 55795, 111590, 2019779, 4039558, 10098895, 20197790]

約数ペア:

[(1, 20197790), (2, 10098895), (5, 4039558), (10, 2019779), (181, 111590), (362, 55795), (905, 22318), (1810, 11159)]