78910180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 170827776

約数和(自身を除く): 91917596

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 127, 188, 235, 254, 470, 508, 635, 661, 940, 1270, 1322, 2540, 2644, 3305, 5969, 6610, 11938, 13220, 23876, 29845, 31067, 59690, 62134, 83947, 119380, 124268, 155335, 167894, 310670, 335788, 419735, 621340, 839470, 1678940, 3945509, 7891018, 15782036, 19727545, 39455090, 78910180]

約数ペア:

[(1, 78910180), (2, 39455090), (4, 19727545), (5, 15782036), (10, 7891018), (20, 3945509), (47, 1678940), (94, 839470), (127, 621340), (188, 419735), (235, 335788), (254, 310670), (470, 167894), (508, 155335), (635, 124268), (661, 119380), (940, 83947), (1270, 62134), (1322, 59690), (2540, 31067), (2644, 29845), (3305, 23876), (5969, 13220), (6610, 11938)]