20459385

素因数分解:

$3^7\times 5^1\times {\mathrm{1871}}^1$

素因数の和:1897

約数の個数: 32

約数和(自身を含む): 36840960

約数和(自身を除く): 16381575

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1871, 2187, 3645, 5613, 9355, 10935, 16839, 28065, 50517, 84195, 151551, 252585, 454653, 757755, 1363959, 2273265, 4091877, 6819795, 20459385]

約数ペア:

[(1, 20459385), (3, 6819795), (5, 4091877), (9, 2273265), (15, 1363959), (27, 757755), (45, 454653), (81, 252585), (135, 151551), (243, 84195), (405, 50517), (729, 28065), (1215, 16839), (1871, 10935), (2187, 9355), (3645, 5613)]