28718361

素因数分解:

$3^3\times 7^4\times {\mathrm{443}}^1$

素因数の和:480

約数の個数: 40

約数和(自身を含む): 49745760

約数和(自身を除く): 21027399

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 443, 1029, 1323, 1329, 2401, 3087, 3101, 3987, 7203, 9261, 9303, 11961, 21609, 21707, 27909, 64827, 65121, 83727, 151949, 195363, 455847, 586089, 1063643, 1367541, 3190929, 4102623, 9572787, 28718361]

約数ペア:

[(1, 28718361), (3, 9572787), (7, 4102623), (9, 3190929), (21, 1367541), (27, 1063643), (49, 586089), (63, 455847), (147, 195363), (189, 151949), (343, 83727), (441, 65121), (443, 64827), (1029, 27909), (1323, 21707), (1329, 21609), (2401, 11961), (3087, 9303), (3101, 9261), (3987, 7203)]