21448745

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1949}}^1$

素因数の和:2056

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5508055

約数列:

[1, 5, 31, 71, 155, 355, 1949, 2201, 9745, 11005, 60419, 138379, 302095, 691895, 4289749, 21448745]

約数ペア:

[(1, 21448745), (5, 4289749), (31, 691895), (71, 302095), (155, 138379), (355, 60419), (1949, 11005), (2201, 9745)]