19987071

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{677}}^1\times {\mathrm{757}}^1$

素因数の和:1450

約数の個数: 16

約数和(自身を含む): 28779744

約数和(自身を除く): 8792673

約数列:

[1, 3, 13, 39, 677, 757, 2031, 2271, 8801, 9841, 26403, 29523, 512489, 1537467, 6662357, 19987071]

約数ペア:

[(1, 19987071), (3, 6662357), (13, 1537467), (39, 512489), (677, 29523), (757, 26403), (2031, 9841), (2271, 8801)]