21489010

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29437}}^1$

素因数の和:29517

約数の個数: 16

約数和(自身を含む): 39211416

約数和(自身を除く): 17722406

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29437, 58874, 147185, 294370, 2148901, 4297802, 10744505, 21489010]

約数ペア:

[(1, 21489010), (2, 10744505), (5, 4297802), (10, 2148901), (73, 294370), (146, 147185), (365, 58874), (730, 29437)]