20218978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{33811}}^1$

素因数の和:33849

約数の個数: 16

約数和(自身を含む): 34082496

約数和(自身を除く): 13863518

約数列:

[1, 2, 13, 23, 26, 46, 299, 598, 33811, 67622, 439543, 777653, 879086, 1555306, 10109489, 20218978]

約数ペア:

[(1, 20218978), (2, 10109489), (13, 1555306), (23, 879086), (26, 777653), (46, 439543), (299, 67622), (598, 33811)]