128241040

素因数分解:

$2^4\times 5^1\times {\mathrm{1603013}}^1$

素因数の和:1603026

約数の個数: 20

約数和(自身を含む): 298160604

約数和(自身を除く): 169919564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1603013, 3206026, 6412052, 8015065, 12824104, 16030130, 25648208, 32060260, 64120520, 128241040]

約数ペア:

[(1, 128241040), (2, 64120520), (4, 32060260), (5, 25648208), (8, 16030130), (10, 12824104), (16, 8015065), (20, 6412052), (40, 3206026), (80, 1603013)]