21222243

素因数分解:

$3^4\times 7^2\times {\mathrm{5347}}^1$

素因数の和:5373

約数の個数: 30

約数和(自身を含む): 36885156

約数和(自身を除く): 15662913

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5347, 16041, 37429, 48123, 112287, 144369, 262003, 336861, 433107, 786009, 1010583, 2358027, 3031749, 7074081, 21222243]

約数ペア:

[(1, 21222243), (3, 7074081), (7, 3031749), (9, 2358027), (21, 1010583), (27, 786009), (49, 433107), (63, 336861), (81, 262003), (147, 144369), (189, 112287), (441, 48123), (567, 37429), (1323, 16041), (3969, 5347)]