20199468081

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{446881}}^1$

素因数の和:446977

約数の個数: 32

約数和(自身を含む): 31031486080

約数和(自身を除く): 10832017999

約数列:

[1, 3, 13, 19, 39, 57, 61, 183, 247, 741, 793, 1159, 2379, 3477, 15067, 45201, 446881, 1340643, 5809453, 8490739, 17428359, 25472217, 27259741, 81779223, 110379607, 331138821, 354376633, 517935079, 1063129899, 1553805237, 6733156027, 20199468081]

約数ペア:

[(1, 20199468081), (3, 6733156027), (13, 1553805237), (19, 1063129899), (39, 517935079), (57, 354376633), (61, 331138821), (183, 110379607), (247, 81779223), (741, 27259741), (793, 25472217), (1159, 17428359), (2379, 8490739), (3477, 5809453), (15067, 1340643), (45201, 446881)]