858872720

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{54497}}^1$

素因数の和:54707

約数の個数: 40

約数和(自身を含む): 2007052344

約数和(自身を除く): 1148179624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 7880, 15760, 54497, 108994, 217988, 272485, 435976, 544970, 871952, 1089940, 2179880, 4359760, 10735909, 21471818, 42943636, 53679545, 85887272, 107359090, 171774544, 214718180, 429436360, 858872720]

約数ペア:

[(1, 858872720), (2, 429436360), (4, 214718180), (5, 171774544), (8, 107359090), (10, 85887272), (16, 53679545), (20, 42943636), (40, 21471818), (80, 10735909), (197, 4359760), (394, 2179880), (788, 1089940), (985, 871952), (1576, 544970), (1970, 435976), (3152, 272485), (3940, 217988), (7880, 108994), (15760, 54497)]