638220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{967}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 1951488

約数和(自身を除く): 1313268

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 967, 1934, 2901, 3868, 4835, 5802, 9670, 10637, 11604, 14505, 19340, 21274, 29010, 31911, 42548, 53185, 58020, 63822, 106370, 127644, 159555, 212740, 319110, 638220]

約数ペア:

[(1, 638220), (2, 319110), (3, 212740), (4, 159555), (5, 127644), (6, 106370), (10, 63822), (11, 58020), (12, 53185), (15, 42548), (20, 31911), (22, 29010), (30, 21274), (33, 19340), (44, 14505), (55, 11604), (60, 10637), (66, 9670), (110, 5802), (132, 4835), (165, 3868), (220, 2901), (330, 1934), (660, 967)]