19201985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3203}}^1$

素因数の和:3328

約数の個数: 16

約数和(自身を含む): 25375680

約数和(自身を除く): 6173695

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3203, 5995, 16015, 35233, 176165, 349127, 1745635, 3840397, 19201985]

約数ペア:

[(1, 19201985), (5, 3840397), (11, 1745635), (55, 349127), (109, 176165), (545, 35233), (1199, 16015), (3203, 5995)]