78280880

素因数分解:

$2^4\times 5^1\times {\mathrm{978511}}^1$

素因数の和:978524

約数の個数: 20

約数和(自身を含む): 182003232

約数和(自身を除く): 103722352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 978511, 1957022, 3914044, 4892555, 7828088, 9785110, 15656176, 19570220, 39140440, 78280880]

約数ペア:

[(1, 78280880), (2, 39140440), (4, 19570220), (5, 15656176), (8, 9785110), (10, 7828088), (16, 4892555), (20, 3914044), (40, 1957022), (80, 978511)]