21810292

素因数分解:

$2^2\times 7^2\times {\mathrm{223}}^1\times {\mathrm{499}}^1$

素因数の和:740

約数の個数: 36

約数和(自身を含む): 44688000

約数和(自身を除く): 22877708

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 223, 446, 499, 892, 998, 1561, 1996, 3122, 3493, 6244, 6986, 10927, 13972, 21854, 24451, 43708, 48902, 97804, 111277, 222554, 445108, 778939, 1557878, 3115756, 5452573, 10905146, 21810292]

約数ペア:

[(1, 21810292), (2, 10905146), (4, 5452573), (7, 3115756), (14, 1557878), (28, 778939), (49, 445108), (98, 222554), (196, 111277), (223, 97804), (446, 48902), (499, 43708), (892, 24451), (998, 21854), (1561, 13972), (1996, 10927), (3122, 6986), (3493, 6244)]