1781889920

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 256

約数和(自身を含む): 4817664000

約数和(自身を除く): 3035774080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 31, 32, 38, 40, 58, 62, 64, 76, 80, 95, 116, 124, 128, 145, 152, 155, 160, 163, 190, 232, 248, 290, 304, 310, 320, 326, 380, 464, 496, 551, 580, 589, 608, 620, 640, 652, 760, 815, 899, 928, 992, 1102, 1160, 1178, 1216, 1240, 1304, 1520, 1630, 1798, 1856, 1984, 2204, 2320, 2356, 2432, 2480, 2608, 2755, 2945, 3040, 3097, 3260, 3596, 3712, 3968, 4408, 4495, 4640, 4712, 4727, 4960, 5053, 5216, 5510, 5890, 6080, 6194, 6520, 7192, 8816, 8990, 9280, 9424, 9454, 9920, 10106, 10432, 11020, 11780, 12160, 12388, 13040, 14384, 15485, 17081, 17632, 17980, 18560, 18848, 18908, 19840, 20212, 20864, 22040, 23560, 23635, 24776, 25265, 26080, 28768, 30970, 34162, 35264, 35960, 37696, 37816, 40424, 44080, 47120, 47270, 49552, 50530, 52160, 57536, 61940, 68324, 70528, 71920, 75392, 75632, 80848, 85405, 88160, 89813, 94240, 94540, 96007, 99104, 101060, 104320, 115072, 123880, 136648, 143840, 146537, 151264, 161696, 170810, 176320, 179626, 188480, 189080, 192014, 198208, 202120, 247760, 273296, 287680, 293074, 302528, 323392, 341620, 352640, 359252, 376960, 378160, 384028, 396416, 404240, 449065, 480035, 495520, 546592, 575360, 586148, 605056, 646784, 683240, 718504, 732685, 756320, 768056, 808480, 898130, 960070, 991040, 1093184, 1172296, 1366480, 1437008, 1465370, 1512640, 1536112, 1616960, 1796260, 1920140, 1982080, 2186368, 2344592, 2732960, 2784203, 2874016, 2930740, 3025280, 3072224, 3233920, 3592520, 3840280, 4689184, 5465920, 5568406, 5748032, 5861480, 6144448, 7185040, 7680560, 9378368, 10931840, 11136812, 11496064, 11722960, 12288896, 13921015, 14370080, 15361120, 18756736, 22273624, 23445920, 27842030, 28740160, 30722240, 44547248, 46891840, 55684060, 57480320, 61444480, 89094496, 93783680, 111368120, 178188992, 222736240, 356377984, 445472480, 890944960, 1781889920]

約数ペア:

[(1, 1781889920), (2, 890944960), (4, 445472480), (5, 356377984), (8, 222736240), (10, 178188992), (16, 111368120), (19, 93783680), (20, 89094496), (29, 61444480), (31, 57480320), (32, 55684060), (38, 46891840), (40, 44547248), (58, 30722240), (62, 28740160), (64, 27842030), (76, 23445920), (80, 22273624), (95, 18756736), (116, 15361120), (124, 14370080), (128, 13921015), (145, 12288896), (152, 11722960), (155, 11496064), (160, 11136812), (163, 10931840), (190, 9378368), (232, 7680560), (248, 7185040), (290, 6144448), (304, 5861480), (310, 5748032), (320, 5568406), (326, 5465920), (380, 4689184), (464, 3840280), (496, 3592520), (551, 3233920), (580, 3072224), (589, 3025280), (608, 2930740), (620, 2874016), (640, 2784203), (652, 2732960), (760, 2344592), (815, 2186368), (899, 1982080), (928, 1920140), (992, 1796260), (1102, 1616960), (1160, 1536112), (1178, 1512640), (1216, 1465370), (1240, 1437008), (1304, 1366480), (1520, 1172296), (1630, 1093184), (1798, 991040), (1856, 960070), (1984, 898130), (2204, 808480), (2320, 768056), (2356, 756320), (2432, 732685), (2480, 718504), (2608, 683240), (2755, 646784), (2945, 605056), (3040, 586148), (3097, 575360), (3260, 546592), (3596, 495520), (3712, 480035), (3968, 449065), (4408, 404240), (4495, 396416), (4640, 384028), (4712, 378160), (4727, 376960), (4960, 359252), (5053, 352640), (5216, 341620), (5510, 323392), (5890, 302528), (6080, 293074), (6194, 287680), (6520, 273296), (7192, 247760), (8816, 202120), (8990, 198208), (9280, 192014), (9424, 189080), (9454, 188480), (9920, 179626), (10106, 176320), (10432, 170810), (11020, 161696), (11780, 151264), (12160, 146537), (12388, 143840), (13040, 136648), (14384, 123880), (15485, 115072), (17081, 104320), (17632, 101060), (17980, 99104), (18560, 96007), (18848, 94540), (18908, 94240), (19840, 89813), (20212, 88160), (20864, 85405), (22040, 80848), (23560, 75632), (23635, 75392), (24776, 71920), (25265, 70528), (26080, 68324), (28768, 61940), (30970, 57536), (34162, 52160), (35264, 50530), (35960, 49552), (37696, 47270), (37816, 47120), (40424, 44080)]