289748140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{997}}^1\times {\mathrm{1321}}^1$

素因数の和:2338

約数の個数: 48

約数和(自身を含む): 664955424

約数和(自身を除く): 375207284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 997, 1321, 1994, 2642, 3988, 4985, 5284, 6605, 9970, 10967, 13210, 14531, 19940, 21934, 26420, 29062, 43868, 54835, 58124, 72655, 109670, 145310, 219340, 290620, 1317037, 2634074, 5268148, 6585185, 13170370, 14487407, 26340740, 28974814, 57949628, 72437035, 144874070, 289748140]

約数ペア:

[(1, 289748140), (2, 144874070), (4, 72437035), (5, 57949628), (10, 28974814), (11, 26340740), (20, 14487407), (22, 13170370), (44, 6585185), (55, 5268148), (110, 2634074), (220, 1317037), (997, 290620), (1321, 219340), (1994, 145310), (2642, 109670), (3988, 72655), (4985, 58124), (5284, 54835), (6605, 43868), (9970, 29062), (10967, 26420), (13210, 21934), (14531, 19940)]