1640872886

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1\times {\mathrm{20809}}^1$

素因数の和:21343

約数の個数: 16

約数和(自身を含む): 2494702800

約数和(自身を除く): 853829914

約数列:

[1, 2, 89, 178, 443, 886, 20809, 39427, 41618, 78854, 1852001, 3704002, 9218387, 18436774, 820436443, 1640872886]

約数ペア:

[(1, 1640872886), (2, 820436443), (89, 18436774), (178, 9218387), (443, 3704002), (886, 1852001), (20809, 78854), (39427, 41618)]