20474968

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{499}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 19845032

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 223, 446, 499, 892, 998, 1784, 1996, 3992, 5129, 10258, 11477, 20516, 22954, 41032, 45908, 91816, 111277, 222554, 445108, 890216, 2559371, 5118742, 10237484, 20474968]

約数ペア:

[(1, 20474968), (2, 10237484), (4, 5118742), (8, 2559371), (23, 890216), (46, 445108), (92, 222554), (184, 111277), (223, 91816), (446, 45908), (499, 41032), (892, 22954), (998, 20516), (1784, 11477), (1996, 10258), (3992, 5129)]