20861690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90703}}^1$

素因数の和:90733

約数の個数: 16

約数和(自身を含む): 39184128

約数和(自身を除く): 18322438

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90703, 181406, 453515, 907030, 2086169, 4172338, 10430845, 20861690]

約数ペア:

[(1, 20861690), (2, 10430845), (5, 4172338), (10, 2086169), (23, 907030), (46, 453515), (115, 181406), (230, 90703)]