20408850

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 288

約数和(自身を含む): 74280960

約数和(自身を除く): 53872110

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 19, 21, 22, 25, 30, 31, 33, 35, 38, 42, 45, 50, 55, 57, 62, 63, 66, 70, 75, 77, 90, 93, 95, 99, 105, 110, 114, 126, 133, 150, 154, 155, 165, 171, 175, 186, 190, 198, 209, 210, 217, 225, 231, 266, 275, 279, 285, 310, 315, 330, 341, 342, 350, 385, 399, 418, 434, 450, 462, 465, 475, 495, 525, 550, 558, 570, 589, 627, 630, 651, 665, 682, 693, 770, 775, 798, 825, 855, 930, 950, 990, 1023, 1045, 1050, 1085, 1155, 1178, 1197, 1254, 1302, 1330, 1386, 1395, 1425, 1463, 1550, 1575, 1650, 1705, 1710, 1767, 1881, 1925, 1953, 1995, 2046, 2090, 2170, 2310, 2325, 2387, 2394, 2475, 2790, 2850, 2926, 2945, 3069, 3135, 3150, 3255, 3325, 3410, 3465, 3534, 3762, 3850, 3906, 3990, 4123, 4275, 4389, 4650, 4774, 4950, 5115, 5225, 5301, 5425, 5775, 5890, 5985, 6138, 6270, 6479, 6510, 6650, 6930, 6975, 7161, 7315, 8246, 8525, 8550, 8778, 8835, 9405, 9765, 9975, 10230, 10450, 10602, 10850, 11550, 11935, 11970, 12369, 12958, 13167, 13950, 14322, 14630, 14725, 15345, 15675, 16275, 17050, 17325, 17670, 18810, 19437, 19530, 19950, 20615, 21483, 21945, 23870, 24738, 25575, 26334, 26505, 29450, 29925, 30690, 31350, 32395, 32550, 34650, 35805, 36575, 37107, 38874, 41230, 42966, 43890, 44175, 45353, 47025, 48825, 51150, 53010, 58311, 59675, 59850, 61845, 64790, 65835, 71610, 73150, 74214, 76725, 88350, 90706, 94050, 97185, 97650, 103075, 107415, 109725, 116622, 119350, 123690, 131670, 132525, 136059, 153450, 161975, 179025, 185535, 194370, 206150, 214830, 219450, 226765, 265050, 272118, 291555, 309225, 323950, 329175, 358050, 371070, 408177, 453530, 485925, 537075, 583110, 618450, 658350, 680295, 816354, 927675, 971850, 1074150, 1133825, 1360590, 1457775, 1855350, 2040885, 2267650, 2915550, 3401475, 4081770, 6802950, 10204425, 20408850]

約数ペア:

[(1, 20408850), (2, 10204425), (3, 6802950), (5, 4081770), (6, 3401475), (7, 2915550), (9, 2267650), (10, 2040885), (11, 1855350), (14, 1457775), (15, 1360590), (18, 1133825), (19, 1074150), (21, 971850), (22, 927675), (25, 816354), (30, 680295), (31, 658350), (33, 618450), (35, 583110), (38, 537075), (42, 485925), (45, 453530), (50, 408177), (55, 371070), (57, 358050), (62, 329175), (63, 323950), (66, 309225), (70, 291555), (75, 272118), (77, 265050), (90, 226765), (93, 219450), (95, 214830), (99, 206150), (105, 194370), (110, 185535), (114, 179025), (126, 161975), (133, 153450), (150, 136059), (154, 132525), (155, 131670), (165, 123690), (171, 119350), (175, 116622), (186, 109725), (190, 107415), (198, 103075), (209, 97650), (210, 97185), (217, 94050), (225, 90706), (231, 88350), (266, 76725), (275, 74214), (279, 73150), (285, 71610), (310, 65835), (315, 64790), (330, 61845), (341, 59850), (342, 59675), (350, 58311), (385, 53010), (399, 51150), (418, 48825), (434, 47025), (450, 45353), (462, 44175), (465, 43890), (475, 42966), (495, 41230), (525, 38874), (550, 37107), (558, 36575), (570, 35805), (589, 34650), (627, 32550), (630, 32395), (651, 31350), (665, 30690), (682, 29925), (693, 29450), (770, 26505), (775, 26334), (798, 25575), (825, 24738), (855, 23870), (930, 21945), (950, 21483), (990, 20615), (1023, 19950), (1045, 19530), (1050, 19437), (1085, 18810), (1155, 17670), (1178, 17325), (1197, 17050), (1254, 16275), (1302, 15675), (1330, 15345), (1386, 14725), (1395, 14630), (1425, 14322), (1463, 13950), (1550, 13167), (1575, 12958), (1650, 12369), (1705, 11970), (1710, 11935), (1767, 11550), (1881, 10850), (1925, 10602), (1953, 10450), (1995, 10230), (2046, 9975), (2090, 9765), (2170, 9405), (2310, 8835), (2325, 8778), (2387, 8550), (2394, 8525), (2475, 8246), (2790, 7315), (2850, 7161), (2926, 6975), (2945, 6930), (3069, 6650), (3135, 6510), (3150, 6479), (3255, 6270), (3325, 6138), (3410, 5985), (3465, 5890), (3534, 5775), (3762, 5425), (3850, 5301), (3906, 5225), (3990, 5115), (4123, 4950), (4275, 4774), (4389, 4650)]