20748945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{197609}}^1$

素因数の和:197624

約数の個数: 16

約数和(自身を含む): 37941120

約数和(自身を除く): 17192175

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 197609, 592827, 988045, 1383263, 2964135, 4149789, 6916315, 20748945]

約数ペア:

[(1, 20748945), (3, 6916315), (5, 4149789), (7, 2964135), (15, 1383263), (21, 988045), (35, 592827), (105, 197609)]