31567280

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2003}}^1$

素因数の和:2213

約数の個数: 40

約数和(自身を含む): 73803312

約数和(自身を除く): 42236032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 2003, 3152, 3940, 4006, 7880, 8012, 10015, 15760, 16024, 20030, 32048, 40060, 80120, 160240, 394591, 789182, 1578364, 1972955, 3156728, 3945910, 6313456, 7891820, 15783640, 31567280]

約数ペア:

[(1, 31567280), (2, 15783640), (4, 7891820), (5, 6313456), (8, 3945910), (10, 3156728), (16, 1972955), (20, 1578364), (40, 789182), (80, 394591), (197, 160240), (394, 80120), (788, 40060), (985, 32048), (1576, 20030), (1970, 16024), (2003, 15760), (3152, 10015), (3940, 8012), (4006, 7880)]