78643480

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 181232640

約数和(自身を除く): 102589160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 127, 137, 226, 254, 274, 452, 508, 548, 565, 635, 685, 904, 1016, 1096, 1130, 1270, 1370, 2260, 2540, 2740, 4520, 5080, 5480, 14351, 15481, 17399, 28702, 30962, 34798, 57404, 61924, 69596, 71755, 77405, 86995, 114808, 123848, 139192, 143510, 154810, 173990, 287020, 309620, 347980, 574040, 619240, 695960, 1966087, 3932174, 7864348, 9830435, 15728696, 19660870, 39321740, 78643480]

約数ペア:

[(1, 78643480), (2, 39321740), (4, 19660870), (5, 15728696), (8, 9830435), (10, 7864348), (20, 3932174), (40, 1966087), (113, 695960), (127, 619240), (137, 574040), (226, 347980), (254, 309620), (274, 287020), (452, 173990), (508, 154810), (548, 143510), (565, 139192), (635, 123848), (685, 114808), (904, 86995), (1016, 77405), (1096, 71755), (1130, 69596), (1270, 61924), (1370, 57404), (2260, 34798), (2540, 30962), (2740, 28702), (4520, 17399), (5080, 15481), (5480, 14351)]