161720145

素因数分解:

$3^5\times 5^1\times {\mathrm{133103}}^1$

素因数の和:133123

約数の個数: 24

約数和(自身を含む): 290699136

約数和(自身を除く): 128978991

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 133103, 399309, 665515, 1197927, 1996545, 3593781, 5989635, 10781343, 17968905, 32344029, 53906715, 161720145]

約数ペア:

[(1, 161720145), (3, 53906715), (5, 32344029), (9, 17968905), (15, 10781343), (27, 5989635), (45, 3593781), (81, 1996545), (135, 1197927), (243, 665515), (405, 399309), (1215, 133103)]