21054915

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{66841}}^1$

素因数の和:66859

約数の個数: 24

約数和(自身を含む): 41709408

約数和(自身を除く): 20654493

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 66841, 200523, 334205, 467887, 601569, 1002615, 1403661, 2339435, 3007845, 4210983, 7018305, 21054915]

約数ペア:

[(1, 21054915), (3, 7018305), (5, 4210983), (7, 3007845), (9, 2339435), (15, 1403661), (21, 1002615), (35, 601569), (45, 467887), (63, 334205), (105, 200523), (315, 66841)]