18881740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13297}}^1$

素因数の和:13377

約数の個数: 24

約数和(自身を含む): 40213152

約数和(自身を除く): 21331412

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13297, 26594, 53188, 66485, 132970, 265940, 944087, 1888174, 3776348, 4720435, 9440870, 18881740]

約数ペア:

[(1, 18881740), (2, 9440870), (4, 4720435), (5, 3776348), (10, 1888174), (20, 944087), (71, 265940), (142, 132970), (284, 66485), (355, 53188), (710, 26594), (1420, 13297)]