72903280

素因数分解:

$2^4\times 5^1\times {\mathrm{911291}}^1$

素因数の和:911304

約数の個数: 20

約数和(自身を含む): 169500312

約数和(自身を除く): 96597032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 911291, 1822582, 3645164, 4556455, 7290328, 9112910, 14580656, 18225820, 36451640, 72903280]

約数ペア:

[(1, 72903280), (2, 36451640), (4, 18225820), (5, 14580656), (8, 9112910), (10, 7290328), (16, 4556455), (20, 3645164), (40, 1822582), (80, 911291)]