28215621

素因数分解:

$3^4\times 7^2\times {\mathrm{7109}}^1$

素因数の和:7135

約数の個数: 30

約数和(自身を含む): 49037670

約数和(自身を除く): 20822049

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 7109, 21327, 49763, 63981, 149289, 191943, 348341, 447867, 575829, 1045023, 1343601, 3135069, 4030803, 9405207, 28215621]

約数ペア:

[(1, 28215621), (3, 9405207), (7, 4030803), (9, 3135069), (21, 1343601), (27, 1045023), (49, 575829), (63, 447867), (81, 348341), (147, 191943), (189, 149289), (441, 63981), (567, 49763), (1323, 21327), (3969, 7109)]