21857404

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{263}}^2$

素因数の和:609

約数の個数: 18

約数和(自身を含む): 38882480

約数和(自身を除く): 17025076

約数列:

[1, 2, 4, 79, 158, 263, 316, 526, 1052, 20777, 41554, 69169, 83108, 138338, 276676, 5464351, 10928702, 21857404]

約数ペア:

[(1, 21857404), (2, 10928702), (4, 5464351), (79, 276676), (158, 138338), (263, 83108), (316, 69169), (526, 41554), (1052, 20777)]