78921320

素因数分解:

$2^3\times 5^1\times {\mathrm{1973033}}^1$

素因数の和:1973044

約数の個数: 16

約数和(自身を含む): 177573060

約数和(自身を除く): 98651740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1973033, 3946066, 7892132, 9865165, 15784264, 19730330, 39460660, 78921320]

約数ペア:

[(1, 78921320), (2, 39460660), (4, 19730330), (5, 15784264), (8, 9865165), (10, 7892132), (20, 3946066), (40, 1973033)]