20980280

素因数分解:

$2^3\times 5^1\times {\mathrm{524507}}^1$

素因数の和:524518

約数の個数: 16

約数和(自身を含む): 47205720

約数和(自身を除く): 26225440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 524507, 1049014, 2098028, 2622535, 4196056, 5245070, 10490140, 20980280]

約数ペア:

[(1, 20980280), (2, 10490140), (4, 5245070), (5, 4196056), (8, 2622535), (10, 2098028), (20, 1049014), (40, 524507)]