18921419

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 21373440

約数和(自身を除く): 2452021

約数列:

[1, 11, 43, 109, 367, 473, 1199, 4037, 4687, 15781, 40003, 51557, 173591, 440033, 1720129, 18921419]

約数ペア:

[(1, 18921419), (11, 1720129), (43, 440033), (109, 173591), (367, 51557), (473, 40003), (1199, 15781), (4037, 4687)]