18909004

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 33868800

約数和(自身を除く): 14959796

約数列:

[1, 2, 4, 71, 139, 142, 278, 284, 479, 556, 958, 1916, 9869, 19738, 34009, 39476, 66581, 68018, 133162, 136036, 266324, 4727251, 9454502, 18909004]

約数ペア:

[(1, 18909004), (2, 9454502), (4, 4727251), (71, 266324), (139, 136036), (142, 133162), (278, 68018), (284, 66581), (479, 39476), (556, 34009), (958, 19738), (1916, 9869)]