72880240

素因数分解:

$2^4\times 5^1\times {\mathrm{911003}}^1$

素因数の和:911016

約数の個数: 20

約数和(自身を含む): 169446744

約数和(自身を除く): 96566504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 911003, 1822006, 3644012, 4555015, 7288024, 9110030, 14576048, 18220060, 36440120, 72880240]

約数ペア:

[(1, 72880240), (2, 36440120), (4, 18220060), (5, 14576048), (8, 9110030), (10, 7288024), (16, 4555015), (20, 3644012), (40, 1822006), (80, 911003)]