21261045

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8387}}^1$

素因数の和:8421

約数の個数: 24

約数和(自身を含む): 36840096

約数和(自身を除く): 15579051

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8387, 25161, 41935, 109031, 125805, 327093, 545155, 1417403, 1635465, 4252209, 7087015, 21261045]

約数ペア:

[(1, 21261045), (3, 7087015), (5, 4252209), (13, 1635465), (15, 1417403), (39, 545155), (65, 327093), (169, 125805), (195, 109031), (507, 41935), (845, 25161), (2535, 8387)]