19104757

素因数分解:

$7^4\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 20

約数和(自身を含む): 22800140

約数和(自身を除く): 3695383

約数列:

[1, 7, 49, 73, 109, 343, 511, 763, 2401, 3577, 5341, 7957, 25039, 37387, 55699, 175273, 261709, 389893, 2729251, 19104757]

約数ペア:

[(1, 19104757), (7, 2729251), (49, 389893), (73, 261709), (109, 175273), (343, 55699), (511, 37387), (763, 25039), (2401, 7957), (3577, 5341)]