20138156740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{769}}^1\times {\mathrm{2143}}^1$

素因数の和:2981

約数の個数: 96

約数和(自身を含む): 46594437120

約数和(自身を除く): 26456280380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 769, 940, 1222, 1538, 2143, 2444, 3055, 3076, 3845, 4286, 6110, 7690, 8572, 9997, 10715, 12220, 15380, 19994, 21430, 27859, 36143, 39988, 42860, 49985, 55718, 72286, 99970, 100721, 111436, 139295, 144572, 180715, 199940, 201442, 278590, 361430, 402884, 469859, 503605, 557180, 722860, 939718, 1007210, 1309373, 1647967, 1879436, 2014420, 2349295, 2618746, 3295934, 4698590, 5237492, 6546865, 6591868, 8239835, 9397180, 13093730, 16479670, 21423571, 26187460, 32959340, 42847142, 77454449, 85694284, 107117855, 154908898, 214235710, 309817796, 387272245, 428471420, 774544490, 1006907837, 1549088980, 2013815674, 4027631348, 5034539185, 10069078370, 20138156740]

約数ペア:

[(1, 20138156740), (2, 10069078370), (4, 5034539185), (5, 4027631348), (10, 2013815674), (13, 1549088980), (20, 1006907837), (26, 774544490), (47, 428471420), (52, 387272245), (65, 309817796), (94, 214235710), (130, 154908898), (188, 107117855), (235, 85694284), (260, 77454449), (470, 42847142), (611, 32959340), (769, 26187460), (940, 21423571), (1222, 16479670), (1538, 13093730), (2143, 9397180), (2444, 8239835), (3055, 6591868), (3076, 6546865), (3845, 5237492), (4286, 4698590), (6110, 3295934), (7690, 2618746), (8572, 2349295), (9997, 2014420), (10715, 1879436), (12220, 1647967), (15380, 1309373), (19994, 1007210), (21430, 939718), (27859, 722860), (36143, 557180), (39988, 503605), (42860, 469859), (49985, 402884), (55718, 361430), (72286, 278590), (99970, 201442), (100721, 199940), (111436, 180715), (139295, 144572)]