21335244

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{509}}^1$

素因数の和:1022

約数の個数: 48

約数和(自身を含む): 57120000

約数和(自身を除く): 35784756

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 499, 509, 998, 1018, 1497, 1527, 1996, 2036, 2994, 3054, 3493, 3563, 5988, 6108, 6986, 7126, 10479, 10689, 13972, 14252, 20958, 21378, 41916, 42756, 253991, 507982, 761973, 1015964, 1523946, 1777937, 3047892, 3555874, 5333811, 7111748, 10667622, 21335244]

約数ペア:

[(1, 21335244), (2, 10667622), (3, 7111748), (4, 5333811), (6, 3555874), (7, 3047892), (12, 1777937), (14, 1523946), (21, 1015964), (28, 761973), (42, 507982), (84, 253991), (499, 42756), (509, 41916), (998, 21378), (1018, 20958), (1497, 14252), (1527, 13972), (1996, 10689), (2036, 10479), (2994, 7126), (3054, 6986), (3493, 6108), (3563, 5988)]