71228680

素因数分解:

$2^3\times 5^1\times {\mathrm{1780717}}^1$

素因数の和:1780728

約数の個数: 16

約数和(自身を含む): 160264620

約数和(自身を除く): 89035940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1780717, 3561434, 7122868, 8903585, 14245736, 17807170, 35614340, 71228680]

約数ペア:

[(1, 71228680), (2, 35614340), (4, 17807170), (5, 14245736), (8, 8903585), (10, 7122868), (20, 3561434), (40, 1780717)]