20198241

素因数分解:

$3^4\times 7^3\times {\mathrm{727}}^1$

素因数の和:760

約数の個数: 40

約数和(自身を含む): 35235200

約数和(自身を除く): 15036959

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 727, 1029, 1323, 2181, 3087, 3969, 5089, 6543, 9261, 15267, 19629, 27783, 35623, 45801, 58887, 106869, 137403, 249361, 320607, 412209, 748083, 961821, 2244249, 2885463, 6732747, 20198241]

約数ペア:

[(1, 20198241), (3, 6732747), (7, 2885463), (9, 2244249), (21, 961821), (27, 748083), (49, 412209), (63, 320607), (81, 249361), (147, 137403), (189, 106869), (343, 58887), (441, 45801), (567, 35623), (727, 27783), (1029, 19629), (1323, 15267), (2181, 9261), (3087, 6543), (3969, 5089)]