21493675520

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{2711}}^1$

素因数の和:2916

約数の個数: 160

約数和(自身を含む): 54599719680

約数和(自身を除く): 33106044160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 163, 190, 256, 304, 320, 326, 380, 512, 608, 640, 652, 760, 815, 1216, 1280, 1304, 1520, 1630, 2432, 2560, 2608, 2711, 3040, 3097, 3260, 4864, 5216, 5422, 6080, 6194, 6520, 9728, 10432, 10844, 12160, 12388, 13040, 13555, 15485, 20864, 21688, 24320, 24776, 26080, 27110, 30970, 41728, 43376, 48640, 49552, 51509, 52160, 54220, 61940, 83456, 86752, 99104, 103018, 104320, 108440, 123880, 173504, 198208, 206036, 208640, 216880, 247760, 257545, 347008, 396416, 412072, 417280, 433760, 441893, 495520, 515090, 694016, 792832, 824144, 867520, 883786, 991040, 1030180, 1388032, 1585664, 1648288, 1735040, 1767572, 1982080, 2060360, 2209465, 3296576, 3470080, 3535144, 3964160, 4120720, 4418930, 6593152, 6940160, 7070288, 7928320, 8241440, 8395967, 8837860, 13186304, 14140576, 16482880, 16791934, 17675720, 26372608, 28281152, 32965760, 33583868, 35351440, 41979835, 56562304, 65931520, 67167736, 70702880, 83959670, 113124608, 131863040, 134335472, 141405760, 167919340, 226249216, 268670944, 282811520, 335838680, 537341888, 565623040, 671677360, 1074683776, 1131246080, 1343354720, 2149367552, 2686709440, 4298735104, 5373418880, 10746837760, 21493675520]

約数ペア:

[(1, 21493675520), (2, 10746837760), (4, 5373418880), (5, 4298735104), (8, 2686709440), (10, 2149367552), (16, 1343354720), (19, 1131246080), (20, 1074683776), (32, 671677360), (38, 565623040), (40, 537341888), (64, 335838680), (76, 282811520), (80, 268670944), (95, 226249216), (128, 167919340), (152, 141405760), (160, 134335472), (163, 131863040), (190, 113124608), (256, 83959670), (304, 70702880), (320, 67167736), (326, 65931520), (380, 56562304), (512, 41979835), (608, 35351440), (640, 33583868), (652, 32965760), (760, 28281152), (815, 26372608), (1216, 17675720), (1280, 16791934), (1304, 16482880), (1520, 14140576), (1630, 13186304), (2432, 8837860), (2560, 8395967), (2608, 8241440), (2711, 7928320), (3040, 7070288), (3097, 6940160), (3260, 6593152), (4864, 4418930), (5216, 4120720), (5422, 3964160), (6080, 3535144), (6194, 3470080), (6520, 3296576), (9728, 2209465), (10432, 2060360), (10844, 1982080), (12160, 1767572), (12388, 1735040), (13040, 1648288), (13555, 1585664), (15485, 1388032), (20864, 1030180), (21688, 991040), (24320, 883786), (24776, 867520), (26080, 824144), (27110, 792832), (30970, 694016), (41728, 515090), (43376, 495520), (48640, 441893), (49552, 433760), (51509, 417280), (52160, 412072), (54220, 396416), (61940, 347008), (83456, 257545), (86752, 247760), (99104, 216880), (103018, 208640), (104320, 206036), (108440, 198208), (123880, 173504)]