72211905

素因数分解:

$3^4\times 5^1\times {\mathrm{178301}}^1$

素因数の和:178318

約数の個数: 20

約数和(自身を含む): 129447252

約数和(自身を除く): 57235347

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 178301, 534903, 891505, 1604709, 2674515, 4814127, 8023545, 14442381, 24070635, 72211905]

約数ペア:

[(1, 72211905), (3, 24070635), (5, 14442381), (9, 8023545), (15, 4814127), (27, 2674515), (45, 1604709), (81, 891505), (135, 534903), (405, 178301)]