2191905

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{727}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 3861312

約数和(自身を除く): 1669407

約数列:

[1, 3, 5, 9, 15, 45, 67, 201, 335, 603, 727, 1005, 2181, 3015, 3635, 6543, 10905, 32715, 48709, 146127, 243545, 438381, 730635, 2191905]

約数ペア:

[(1, 2191905), (3, 730635), (5, 438381), (9, 243545), (15, 146127), (45, 48709), (67, 32715), (201, 10905), (335, 6543), (603, 3635), (727, 3015), (1005, 2181)]