639882

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{1871}}^1$

素因数の和:1898

約数の個数: 24

約数和(自身を含む): 1460160

約数和(自身を除く): 820278

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 1871, 3742, 5613, 11226, 16839, 33678, 35549, 71098, 106647, 213294, 319941, 639882]

約数ペア:

[(1, 639882), (2, 319941), (3, 213294), (6, 106647), (9, 71098), (18, 35549), (19, 33678), (38, 16839), (57, 11226), (114, 5613), (171, 3742), (342, 1871)]