25831880

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{977}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 58269240

約数和(自身を除く): 32437360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 977, 1322, 1954, 2644, 3305, 3908, 4885, 5288, 6610, 7816, 9770, 13220, 19540, 26440, 39080, 645797, 1291594, 2583188, 3228985, 5166376, 6457970, 12915940, 25831880]

約数ペア:

[(1, 25831880), (2, 12915940), (4, 6457970), (5, 5166376), (8, 3228985), (10, 2583188), (20, 1291594), (40, 645797), (661, 39080), (977, 26440), (1322, 19540), (1954, 13220), (2644, 9770), (3305, 7816), (3908, 6610), (4885, 5288)]