28145390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:381

約数の個数: 64

約数和(自身を含む): 63068544

約数和(自身を除く): 34923154

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 157, 182, 197, 314, 394, 455, 785, 910, 985, 1099, 1379, 1570, 1970, 2041, 2198, 2561, 2758, 4082, 5122, 5495, 6895, 10205, 10990, 12805, 13790, 14287, 17927, 20410, 25610, 28574, 30929, 35854, 61858, 71435, 89635, 142870, 154645, 179270, 216503, 309290, 402077, 433006, 804154, 1082515, 2010385, 2165030, 2814539, 4020770, 5629078, 14072695, 28145390]

約数ペア:

[(1, 28145390), (2, 14072695), (5, 5629078), (7, 4020770), (10, 2814539), (13, 2165030), (14, 2010385), (26, 1082515), (35, 804154), (65, 433006), (70, 402077), (91, 309290), (130, 216503), (157, 179270), (182, 154645), (197, 142870), (314, 89635), (394, 71435), (455, 61858), (785, 35854), (910, 30929), (985, 28574), (1099, 25610), (1379, 20410), (1570, 17927), (1970, 14287), (2041, 13790), (2198, 12805), (2561, 10990), (2758, 10205), (4082, 6895), (5122, 5495)]