2019431875

素因数分解:

$5^4\times {\mathrm{101}}^1\times {\mathrm{31991}}^1$

素因数の和:32112

約数の個数: 20

約数和(自身を含む): 2548546704

約数和(自身を除く): 529114829

約数列:

[1, 5, 25, 101, 125, 505, 625, 2525, 12625, 31991, 63125, 159955, 799775, 3231091, 3998875, 16155455, 19994375, 80777275, 403886375, 2019431875]

約数ペア:

[(1, 2019431875), (5, 403886375), (25, 80777275), (101, 19994375), (125, 16155455), (505, 3998875), (625, 3231091), (2525, 799775), (12625, 159955), (31991, 63125)]