72608840

素因数分解:

$2^3\times 5^1\times {\mathrm{1815221}}^1$

素因数の和:1815232

約数の個数: 16

約数和(自身を含む): 163369980

約数和(自身を除く): 90761140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1815221, 3630442, 7260884, 9076105, 14521768, 18152210, 36304420, 72608840]

約数ペア:

[(1, 72608840), (2, 36304420), (4, 18152210), (5, 14521768), (8, 9076105), (10, 7260884), (20, 3630442), (40, 1815221)]