9985940

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2239}}^1$

素因数の和:2471

約数の個数: 24

約数和(自身を含む): 21073920

約数和(自身を除く): 11087980

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 2239, 4460, 4478, 8956, 11195, 22390, 44780, 499297, 998594, 1997188, 2496485, 4992970, 9985940]

約数ペア:

[(1, 9985940), (2, 4992970), (4, 2496485), (5, 1997188), (10, 998594), (20, 499297), (223, 44780), (446, 22390), (892, 11195), (1115, 8956), (2230, 4478), (2239, 4460)]