40640678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67961}}^1$

素因数の和:67999

約数の個数: 16

約数和(自身を含む): 68505696

約数和(自身を除く): 27865018

約数列:

[1, 2, 13, 23, 26, 46, 299, 598, 67961, 135922, 883493, 1563103, 1766986, 3126206, 20320339, 40640678]

約数ペア:

[(1, 40640678), (2, 20320339), (13, 3126206), (23, 1766986), (26, 1563103), (46, 883493), (299, 135922), (598, 67961)]