20684413981

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{140717}}^1$

素因数の和:140841

約数の個数: 32

約数和(自身を含む): 27233998848

約数和(自身を除く): 6549584867

約数列:

[1, 7, 11, 23, 77, 83, 161, 253, 581, 913, 1771, 1909, 6391, 13363, 20999, 140717, 146993, 985019, 1547887, 3236491, 10835209, 11679511, 22655437, 35601401, 81756577, 128474621, 249209807, 268628753, 899322347, 1880401271, 2954916283, 20684413981]

約数ペア:

[(1, 20684413981), (7, 2954916283), (11, 1880401271), (23, 899322347), (77, 268628753), (83, 249209807), (161, 128474621), (253, 81756577), (581, 35601401), (913, 22655437), (1771, 11679511), (1909, 10835209), (6391, 3236491), (13363, 1547887), (20999, 985019), (140717, 146993)]