21897465

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 36806400

約数和(自身を除く): 14908935

約数列:

[1, 3, 5, 15, 29, 71, 87, 145, 213, 355, 435, 709, 1065, 2059, 2127, 3545, 6177, 10295, 10635, 20561, 30885, 50339, 61683, 102805, 151017, 251695, 308415, 755085, 1459831, 4379493, 7299155, 21897465]

約数ペア:

[(1, 21897465), (3, 7299155), (5, 4379493), (15, 1459831), (29, 755085), (71, 308415), (87, 251695), (145, 151017), (213, 102805), (355, 61683), (435, 50339), (709, 30885), (1065, 20561), (2059, 10635), (2127, 10295), (3545, 6177)]