21088305

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{66947}}^1$

素因数の和:66965

約数の個数: 24

約数和(自身を含む): 41775552

約数和(自身を除く): 20687247

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 66947, 200841, 334735, 468629, 602523, 1004205, 1405887, 2343145, 3012615, 4217661, 7029435, 21088305]

約数ペア:

[(1, 21088305), (3, 7029435), (5, 4217661), (7, 3012615), (9, 2343145), (15, 1405887), (21, 1004205), (35, 602523), (45, 468629), (63, 334735), (105, 200841), (315, 66947)]