205021845

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{650863}}^1$

素因数の和:650881

約数の個数: 24

約数和(自身を含む): 406139136

約数和(自身を除く): 201117291

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 650863, 1952589, 3254315, 4556041, 5857767, 9762945, 13668123, 22780205, 29288835, 41004369, 68340615, 205021845]

約数ペア:

[(1, 205021845), (3, 68340615), (5, 41004369), (7, 29288835), (9, 22780205), (15, 13668123), (21, 9762945), (35, 5857767), (45, 4556041), (63, 3254315), (105, 1952589), (315, 650863)]