21031726468

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{839}}^1\times {\mathrm{1709}}^1$

素因数の和:2764

約数の個数: 48

約数和(自身を含む): 39012624000

約数和(自身を除く): 17980897532

約数列:

[1, 2, 4, 19, 38, 76, 193, 386, 772, 839, 1678, 1709, 3356, 3418, 3667, 6836, 7334, 14668, 15941, 31882, 32471, 63764, 64942, 129884, 161927, 323854, 329837, 647708, 659674, 1319348, 1433851, 2867702, 3076613, 5735404, 6153226, 6266903, 12306452, 12533806, 25067612, 27243169, 54486338, 108972676, 276733243, 553466486, 1106932972, 5257931617, 10515863234, 21031726468]

約数ペア:

[(1, 21031726468), (2, 10515863234), (4, 5257931617), (19, 1106932972), (38, 553466486), (76, 276733243), (193, 108972676), (386, 54486338), (772, 27243169), (839, 25067612), (1678, 12533806), (1709, 12306452), (3356, 6266903), (3418, 6153226), (3667, 5735404), (6836, 3076613), (7334, 2867702), (14668, 1433851), (15941, 1319348), (31882, 659674), (32471, 647708), (63764, 329837), (64942, 323854), (129884, 161927)]