180366980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{1789}}^1$

素因数の和:1940

約数の個数: 36

約数和(自身を含む): 384395340

約数和(自身を除く): 204028360

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 1789, 3578, 5041, 7156, 8945, 10082, 17890, 20164, 25205, 35780, 50410, 100820, 127019, 254038, 508076, 635095, 1270190, 2540380, 9018349, 18036698, 36073396, 45091745, 90183490, 180366980]

約数ペア:

[(1, 180366980), (2, 90183490), (4, 45091745), (5, 36073396), (10, 18036698), (20, 9018349), (71, 2540380), (142, 1270190), (284, 635095), (355, 508076), (710, 254038), (1420, 127019), (1789, 100820), (3578, 50410), (5041, 35780), (7156, 25205), (8945, 20164), (10082, 17890)]