21036340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80909}}^1$

素因数の和:80931

約数の個数: 24

約数和(自身を含む): 47575080

約数和(自身を除く): 26538740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80909, 161818, 323636, 404545, 809090, 1051817, 1618180, 2103634, 4207268, 5259085, 10518170, 21036340]

約数ペア:

[(1, 21036340), (2, 10518170), (4, 5259085), (5, 4207268), (10, 2103634), (13, 1618180), (20, 1051817), (26, 809090), (52, 404545), (65, 323636), (130, 161818), (260, 80909)]