19955913

素因数分解:

$3^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 28230048

約数和(自身を除く): 8274135

約数列:

[1, 3, 37, 43, 111, 113, 129, 339, 1369, 1591, 4107, 4181, 4773, 4859, 12543, 14577, 58867, 154697, 176601, 179783, 464091, 539349, 6651971, 19955913]

約数ペア:

[(1, 19955913), (3, 6651971), (37, 539349), (43, 464091), (111, 179783), (113, 176601), (129, 154697), (339, 58867), (1369, 14577), (1591, 12543), (4107, 4859), (4181, 4773)]