1288305

素因数分解:

$3^4\times 5^1\times {\mathrm{3181}}^1$

素因数の和:3198

約数の個数: 20

約数和(自身を含む): 2310132

約数和(自身を除く): 1021827

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 3181, 9543, 15905, 28629, 47715, 85887, 143145, 257661, 429435, 1288305]

約数ペア:

[(1, 1288305), (3, 429435), (5, 257661), (9, 143145), (15, 85887), (27, 47715), (45, 28629), (81, 15905), (135, 9543), (405, 3181)]