20078047688

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{487}}^1$

素因数の和:787

約数の個数: 128

約数和(自身を含む): 42163200000

約数和(自身を除く): 22085152312

約数列:

[1, 2, 4, 8, 19, 29, 38, 47, 58, 76, 94, 116, 152, 188, 199, 232, 376, 398, 487, 551, 796, 893, 974, 1102, 1363, 1592, 1786, 1948, 2204, 2726, 3572, 3781, 3896, 4408, 5452, 5771, 7144, 7562, 9253, 9353, 10904, 11542, 14123, 15124, 18506, 18706, 22889, 23084, 25897, 28246, 30248, 37012, 37412, 45778, 46168, 51794, 56492, 74024, 74824, 91556, 96913, 103588, 109649, 112984, 177707, 183112, 193826, 207176, 219298, 268337, 271237, 355414, 387652, 434891, 438596, 536674, 542474, 663781, 710828, 775304, 869782, 877192, 1073348, 1084948, 1327562, 1421656, 1739564, 1841347, 2146696, 2169896, 2655124, 2810477, 3479128, 3682694, 4554911, 5153503, 5310248, 5620954, 7365388, 9109822, 10307006, 11241908, 12611839, 14730776, 18219644, 20614012, 22483816, 25223678, 36439288, 41228024, 50447356, 53399063, 86543309, 100894712, 106798126, 132092419, 173086618, 213596252, 264184838, 346173236, 427192504, 528369676, 692346472, 1056739352, 2509755961, 5019511922, 10039023844, 20078047688]

約数ペア:

[(1, 20078047688), (2, 10039023844), (4, 5019511922), (8, 2509755961), (19, 1056739352), (29, 692346472), (38, 528369676), (47, 427192504), (58, 346173236), (76, 264184838), (94, 213596252), (116, 173086618), (152, 132092419), (188, 106798126), (199, 100894712), (232, 86543309), (376, 53399063), (398, 50447356), (487, 41228024), (551, 36439288), (796, 25223678), (893, 22483816), (974, 20614012), (1102, 18219644), (1363, 14730776), (1592, 12611839), (1786, 11241908), (1948, 10307006), (2204, 9109822), (2726, 7365388), (3572, 5620954), (3781, 5310248), (3896, 5153503), (4408, 4554911), (5452, 3682694), (5771, 3479128), (7144, 2810477), (7562, 2655124), (9253, 2169896), (9353, 2146696), (10904, 1841347), (11542, 1739564), (14123, 1421656), (15124, 1327562), (18506, 1084948), (18706, 1073348), (22889, 877192), (23084, 869782), (25897, 775304), (28246, 710828), (30248, 663781), (37012, 542474), (37412, 536674), (45778, 438596), (46168, 434891), (51794, 387652), (56492, 355414), (74024, 271237), (74824, 268337), (91556, 219298), (96913, 207176), (103588, 193826), (109649, 183112), (112984, 177707)]