21941720

素因数分解:

$2^3\times 5^1\times {\mathrm{548543}}^1$

素因数の和:548554

約数の個数: 16

約数和(自身を含む): 49368960

約数和(自身を除く): 27427240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548543, 1097086, 2194172, 2742715, 4388344, 5485430, 10970860, 21941720]

約数ペア:

[(1, 21941720), (2, 10970860), (4, 5485430), (5, 4388344), (8, 2742715), (10, 2194172), (20, 1097086), (40, 548543)]