1387932217

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{278087}}^1$

素因数の和:278148

約数の個数: 16

約数和(自身を含む): 1708572672

約数和(自身を除く): 320640455

約数列:

[1, 7, 23, 31, 161, 217, 713, 4991, 278087, 1946609, 6396001, 8620697, 44772007, 60344879, 198276031, 1387932217]

約数ペア:

[(1, 1387932217), (7, 198276031), (23, 60344879), (31, 44772007), (161, 8620697), (217, 6396001), (713, 1946609), (4991, 278087)]