19999040

素因数分解:

$2^6\times 5^1\times {\mathrm{62497}}^1$

素因数の和:62514

約数の個数: 28

約数和(自身を含む): 47623476

約数和(自身を除く): 27624436

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 62497, 124994, 249988, 312485, 499976, 624970, 999952, 1249940, 1999904, 2499880, 3999808, 4999760, 9999520, 19999040]

約数ペア:

[(1, 19999040), (2, 9999520), (4, 4999760), (5, 3999808), (8, 2499880), (10, 1999904), (16, 1249940), (20, 999952), (32, 624970), (40, 499976), (64, 312485), (80, 249988), (160, 124994), (320, 62497)]