20039860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21319}}^1$

素因数の和:21375

約数の個数: 24

約数和(自身を含む): 42981120

約数和(自身を除く): 22941260

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21319, 42638, 85276, 106595, 213190, 426380, 1001993, 2003986, 4007972, 5009965, 10019930, 20039860]

約数ペア:

[(1, 20039860), (2, 10019930), (4, 5009965), (5, 4007972), (10, 2003986), (20, 1001993), (47, 426380), (94, 213190), (188, 106595), (235, 85276), (470, 42638), (940, 21319)]