78399040

素因数分解:

$2^6\times 5^1\times {\mathrm{244997}}^1$

素因数の和:245014

約数の個数: 28

約数和(自身を含む): 186688476

約数和(自身を除く): 108289436

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 244997, 489994, 979988, 1224985, 1959976, 2449970, 3919952, 4899940, 7839904, 9799880, 15679808, 19599760, 39199520, 78399040]

約数ペア:

[(1, 78399040), (2, 39199520), (4, 19599760), (5, 15679808), (8, 9799880), (10, 7839904), (16, 4899940), (20, 3919952), (32, 2449970), (40, 1959976), (64, 1224985), (80, 979988), (160, 489994), (320, 244997)]