20164545

素因数分解:

$3^4\times 5^1\times {\mathrm{49789}}^1$

素因数の和:49806

約数の個数: 20

約数和(自身を含む): 36147540

約数和(自身を除く): 15982995

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49789, 149367, 248945, 448101, 746835, 1344303, 2240505, 4032909, 6721515, 20164545]

約数ペア:

[(1, 20164545), (3, 6721515), (5, 4032909), (9, 2240505), (15, 1344303), (27, 746835), (45, 448101), (81, 248945), (135, 149367), (405, 49789)]