21279689920

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{659}}^1$

素因数の和:855

約数の個数: 224

約数和(自身を含む): 55039564800

約数和(自身を除く): 33759874880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 47, 64, 76, 80, 94, 95, 113, 152, 160, 188, 190, 226, 235, 304, 320, 376, 380, 452, 470, 565, 608, 659, 752, 760, 893, 904, 940, 1130, 1216, 1318, 1504, 1520, 1786, 1808, 1880, 2147, 2260, 2636, 3008, 3040, 3295, 3572, 3616, 3760, 4294, 4465, 4520, 5272, 5311, 6080, 6590, 7144, 7232, 7520, 8588, 8930, 9040, 10544, 10622, 10735, 12521, 13180, 14288, 15040, 17176, 17860, 18080, 21088, 21244, 21470, 25042, 26360, 26555, 28576, 30973, 34352, 35720, 36160, 42176, 42488, 42940, 50084, 52720, 53110, 57152, 61946, 62605, 68704, 71440, 74467, 84976, 85880, 100168, 100909, 105440, 106220, 123892, 125210, 137408, 142880, 148934, 154865, 169952, 171760, 200336, 201818, 210880, 212440, 247784, 250420, 285760, 297868, 309730, 339904, 343520, 372335, 400672, 403636, 424880, 495568, 500840, 504545, 588487, 595736, 619460, 687040, 744670, 801344, 807272, 849760, 991136, 1001680, 1009090, 1176974, 1191472, 1238920, 1414873, 1489340, 1614544, 1699520, 1982272, 2003360, 2018180, 2353948, 2382944, 2477840, 2829746, 2942435, 2978680, 3229088, 3499949, 4006720, 4036360, 4707896, 4765888, 4955680, 5659492, 5884870, 5957360, 6458176, 6999898, 7074365, 8072720, 9415792, 9911360, 11318984, 11769740, 11914720, 13999796, 14148730, 16145440, 17499745, 18831584, 22637968, 23539480, 23829440, 27999592, 28297460, 32290880, 34999490, 37663168, 45275936, 47078960, 55999184, 56594920, 66499031, 69998980, 90551872, 94157920, 111998368, 113189840, 132998062, 139997960, 188315840, 223996736, 226379680, 265996124, 279995920, 332495155, 452759360, 531992248, 559991840, 664990310, 1063984496, 1119983680, 1329980620, 2127968992, 2659961240, 4255937984, 5319922480, 10639844960, 21279689920]

約数ペア:

[(1, 21279689920), (2, 10639844960), (4, 5319922480), (5, 4255937984), (8, 2659961240), (10, 2127968992), (16, 1329980620), (19, 1119983680), (20, 1063984496), (32, 664990310), (38, 559991840), (40, 531992248), (47, 452759360), (64, 332495155), (76, 279995920), (80, 265996124), (94, 226379680), (95, 223996736), (113, 188315840), (152, 139997960), (160, 132998062), (188, 113189840), (190, 111998368), (226, 94157920), (235, 90551872), (304, 69998980), (320, 66499031), (376, 56594920), (380, 55999184), (452, 47078960), (470, 45275936), (565, 37663168), (608, 34999490), (659, 32290880), (752, 28297460), (760, 27999592), (893, 23829440), (904, 23539480), (940, 22637968), (1130, 18831584), (1216, 17499745), (1318, 16145440), (1504, 14148730), (1520, 13999796), (1786, 11914720), (1808, 11769740), (1880, 11318984), (2147, 9911360), (2260, 9415792), (2636, 8072720), (3008, 7074365), (3040, 6999898), (3295, 6458176), (3572, 5957360), (3616, 5884870), (3760, 5659492), (4294, 4955680), (4465, 4765888), (4520, 4707896), (5272, 4036360), (5311, 4006720), (6080, 3499949), (6590, 3229088), (7144, 2978680), (7232, 2942435), (7520, 2829746), (8588, 2477840), (8930, 2382944), (9040, 2353948), (10544, 2018180), (10622, 2003360), (10735, 1982272), (12521, 1699520), (13180, 1614544), (14288, 1489340), (15040, 1414873), (17176, 1238920), (17860, 1191472), (18080, 1176974), (21088, 1009090), (21244, 1001680), (21470, 991136), (25042, 849760), (26360, 807272), (26555, 801344), (28576, 744670), (30973, 687040), (34352, 619460), (35720, 595736), (36160, 588487), (42176, 504545), (42488, 500840), (42940, 495568), (50084, 424880), (52720, 403636), (53110, 400672), (57152, 372335), (61946, 343520), (62605, 339904), (68704, 309730), (71440, 297868), (74467, 285760), (84976, 250420), (85880, 247784), (100168, 212440), (100909, 210880), (105440, 201818), (106220, 200336), (123892, 171760), (125210, 169952), (137408, 154865), (142880, 148934)]