51420280

素因数分解:

$2^3\times 5^1\times {\mathrm{1285507}}^1$

素因数の和:1285518

約数の個数: 16

約数和(自身を含む): 115695720

約数和(自身を除く): 64275440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1285507, 2571014, 5142028, 6427535, 10284056, 12855070, 25710140, 51420280]

約数ペア:

[(1, 51420280), (2, 25710140), (4, 12855070), (5, 10284056), (8, 6427535), (10, 5142028), (20, 2571014), (40, 1285507)]