2019949375

素因数分解:

$5^4\times {\mathrm{19}}^1\times {\mathrm{170101}}^1$

素因数の和:170140

約数の個数: 20

約数和(自身を含む): 2656993240

約数和(自身を除く): 637043865

約数列:

[1, 5, 19, 25, 95, 125, 475, 625, 2375, 11875, 170101, 850505, 3231919, 4252525, 16159595, 21262625, 80797975, 106313125, 403989875, 2019949375]

約数ペア:

[(1, 2019949375), (5, 403989875), (19, 106313125), (25, 80797975), (95, 21262625), (125, 16159595), (475, 4252525), (625, 3231919), (2375, 850505), (11875, 170101)]