72880400

素因数分解:

$2^4\times 5^2\times {\mathrm{182201}}^1$

素因数の和:182219

約数の個数: 30

約数和(自身を含む): 175096122

約数和(自身を除く): 102215722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 182201, 364402, 728804, 911005, 1457608, 1822010, 2915216, 3644020, 4555025, 7288040, 9110050, 14576080, 18220100, 36440200, 72880400]

約数ペア:

[(1, 72880400), (2, 36440200), (4, 18220100), (5, 14576080), (8, 9110050), (10, 7288040), (16, 4555025), (20, 3644020), (25, 2915216), (40, 1822010), (50, 1457608), (80, 911005), (100, 728804), (200, 364402), (400, 182201)]