79968880

素因数分解:

$2^4\times 5^1\times {\mathrm{999611}}^1$

素因数の和:999624

約数の個数: 20

約数和(自身を含む): 185927832

約数和(自身を除く): 105958952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 999611, 1999222, 3998444, 4998055, 7996888, 9996110, 15993776, 19992220, 39984440, 79968880]

約数ペア:

[(1, 79968880), (2, 39984440), (4, 19992220), (5, 15993776), (8, 9996110), (10, 7996888), (16, 4998055), (20, 3998444), (40, 1999222), (80, 999611)]