21931029

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1999}}^1$

素因数の和:2081

約数の個数: 24

約数和(自身を含む): 33696000

約数和(自身を除く): 11764971

約数列:

[1, 3, 9, 23, 53, 69, 159, 207, 477, 1219, 1999, 3657, 5997, 10971, 17991, 45977, 105947, 137931, 317841, 413793, 953523, 2436781, 7310343, 21931029]

約数ペア:

[(1, 21931029), (3, 7310343), (9, 2436781), (23, 953523), (53, 413793), (69, 317841), (159, 137931), (207, 105947), (477, 45977), (1219, 17991), (1999, 10971), (3657, 5997)]