31807280

素因数分解:

$2^4\times 5^1\times {\mathrm{397591}}^1$

素因数の和:397604

約数の個数: 20

約数和(自身を含む): 73952112

約数和(自身を除く): 42144832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397591, 795182, 1590364, 1987955, 3180728, 3975910, 6361456, 7951820, 15903640, 31807280]

約数ペア:

[(1, 31807280), (2, 15903640), (4, 7951820), (5, 6361456), (8, 3975910), (10, 3180728), (16, 1987955), (20, 1590364), (40, 795182), (80, 397591)]