21305349

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20233}}^1$

素因数の和:20258

約数の個数: 20

約数和(自身を含む): 34276396

約数和(自身を除く): 12971047

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20233, 60699, 182097, 263029, 546291, 789087, 1638873, 2367261, 7101783, 21305349]

約数ペア:

[(1, 21305349), (3, 7101783), (9, 2367261), (13, 1638873), (27, 789087), (39, 546291), (81, 263029), (117, 182097), (351, 60699), (1053, 20233)]