19687551

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{2789}}^1$

素因数の和:2986

約数の個数: 16

約数和(自身を含む): 28435680

約数和(自身を除く): 8748129

約数列:

[1, 3, 13, 39, 181, 543, 2353, 2789, 7059, 8367, 36257, 108771, 504809, 1514427, 6562517, 19687551]

約数ペア:

[(1, 19687551), (3, 6562517), (13, 1514427), (39, 504809), (181, 108771), (543, 36257), (2353, 8367), (2789, 7059)]