72128360

素因数分解:

$2^3\times 5^1\times {\mathrm{1803209}}^1$

素因数の和:1803220

約数の個数: 16

約数和(自身を含む): 162288900

約数和(自身を除く): 90160540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1803209, 3606418, 7212836, 9016045, 14425672, 18032090, 36064180, 72128360]

約数ペア:

[(1, 72128360), (2, 36064180), (4, 18032090), (5, 14425672), (8, 9016045), (10, 7212836), (20, 3606418), (40, 1803209)]