18857005

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{383}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 23316480

約数和(自身を除く): 4459475

約数列:

[1, 5, 43, 215, 229, 383, 1145, 1915, 9847, 16469, 49235, 82345, 87707, 438535, 3771401, 18857005]

約数ペア:

[(1, 18857005), (5, 3771401), (43, 438535), (215, 87707), (229, 82345), (383, 49235), (1145, 16469), (1915, 9847)]