20409039

素因数分解:

$3^2\times 7^2\times {\mathrm{46279}}^1$

素因数の和:46299

約数の個数: 18

約数和(自身を含む): 34293480

約数和(自身を除く): 13884441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 46279, 138837, 323953, 416511, 971859, 2267671, 2915577, 6803013, 20409039]

約数ペア:

[(1, 20409039), (3, 6803013), (7, 2915577), (9, 2267671), (21, 971859), (49, 416511), (63, 323953), (147, 138837), (441, 46279)]