79877680

素因数分解:

$2^4\times 5^1\times {\mathrm{998471}}^1$

素因数の和:998484

約数の個数: 20

約数和(自身を含む): 185715792

約数和(自身を除く): 105838112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 998471, 1996942, 3993884, 4992355, 7987768, 9984710, 15975536, 19969420, 39938840, 79877680]

約数ペア:

[(1, 79877680), (2, 39938840), (4, 19969420), (5, 15975536), (8, 9984710), (10, 7987768), (16, 4992355), (20, 3993884), (40, 1996942), (80, 998471)]