78555280

素因数分解:

$2^4\times 5^1\times {\mathrm{981941}}^1$

素因数の和:981954

約数の個数: 20

約数和(自身を含む): 182641212

約数和(自身を除く): 104085932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981941, 1963882, 3927764, 4909705, 7855528, 9819410, 15711056, 19638820, 39277640, 78555280]

約数ペア:

[(1, 78555280), (2, 39277640), (4, 19638820), (5, 15711056), (8, 9819410), (10, 7855528), (16, 4909705), (20, 3927764), (40, 1963882), (80, 981941)]