157213305

素因数分解:

$3^4\times 5^1\times {\mathrm{388181}}^1$

素因数の和:388198

約数の個数: 20

約数和(自身を含む): 281820132

約数和(自身を除く): 124606827

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 388181, 1164543, 1940905, 3493629, 5822715, 10480887, 17468145, 31442661, 52404435, 157213305]

約数ペア:

[(1, 157213305), (3, 52404435), (5, 31442661), (9, 17468145), (15, 10480887), (27, 5822715), (45, 3493629), (81, 1940905), (135, 1164543), (405, 388181)]