20976505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3499}}^1$

素因数の和:3624

約数の個数: 16

約数和(自身を含む): 27720000

約数和(自身を除く): 6743495

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3499, 5995, 17495, 38489, 192445, 381391, 1906955, 4195301, 20976505]

約数ペア:

[(1, 20976505), (5, 4195301), (11, 1906955), (55, 381391), (109, 192445), (545, 38489), (1199, 17495), (3499, 5995)]