18979285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9419}}^1$

素因数の和:9468

約数の個数: 16

約数和(自身を含む): 25320960

約数和(自身を除く): 6341675

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9419, 47095, 122447, 291989, 612235, 1459945, 3795857, 18979285]

約数ペア:

[(1, 18979285), (5, 3795857), (13, 1459945), (31, 612235), (65, 291989), (155, 122447), (403, 47095), (2015, 9419)]