20645856

素因数分解:

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

素因数の和:67

約数の個数: 288

約数和(自身を含む): 78624000

約数和(自身を除く): 57978144

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 19, 21, 22, 24, 28, 32, 33, 36, 38, 42, 44, 48, 49, 56, 57, 63, 66, 72, 76, 77, 84, 88, 96, 98, 99, 112, 114, 126, 132, 133, 144, 147, 152, 154, 168, 171, 176, 196, 198, 209, 224, 228, 231, 252, 264, 266, 288, 294, 304, 308, 336, 342, 343, 352, 392, 396, 399, 418, 441, 456, 462, 504, 528, 532, 539, 588, 608, 616, 627, 672, 684, 686, 693, 784, 792, 798, 836, 882, 912, 924, 931, 1008, 1029, 1056, 1064, 1078, 1176, 1197, 1232, 1254, 1368, 1372, 1386, 1463, 1568, 1584, 1596, 1617, 1672, 1764, 1824, 1848, 1862, 1881, 2016, 2058, 2128, 2156, 2352, 2394, 2464, 2508, 2736, 2744, 2772, 2793, 2926, 3087, 3168, 3192, 3234, 3344, 3528, 3696, 3724, 3762, 3773, 4116, 4256, 4312, 4389, 4704, 4788, 4851, 5016, 5472, 5488, 5544, 5586, 5852, 6174, 6384, 6468, 6517, 6688, 7056, 7392, 7448, 7524, 7546, 8232, 8379, 8624, 8778, 9576, 9702, 10032, 10241, 10976, 11088, 11172, 11319, 11704, 12348, 12768, 12936, 13034, 13167, 14112, 14896, 15048, 15092, 16464, 16758, 17248, 17556, 19152, 19404, 19551, 20064, 20482, 22176, 22344, 22638, 23408, 24696, 25872, 26068, 26334, 29792, 30096, 30184, 30723, 32928, 33516, 33957, 35112, 38304, 38808, 39102, 40964, 44688, 45276, 46816, 49392, 51744, 52136, 52668, 58653, 60192, 60368, 61446, 67032, 67914, 70224, 71687, 77616, 78204, 81928, 89376, 90552, 92169, 98784, 104272, 105336, 117306, 120736, 122892, 134064, 135828, 140448, 143374, 155232, 156408, 163856, 181104, 184338, 208544, 210672, 215061, 234612, 245784, 268128, 271656, 286748, 312816, 327712, 362208, 368676, 421344, 430122, 469224, 491568, 543312, 573496, 625632, 645183, 737352, 860244, 938448, 983136, 1086624, 1146992, 1290366, 1474704, 1720488, 1876896, 2293984, 2580732, 2949408, 3440976, 5161464, 6881952, 10322928, 20645856]

約数ペア:

[(1, 20645856), (2, 10322928), (3, 6881952), (4, 5161464), (6, 3440976), (7, 2949408), (8, 2580732), (9, 2293984), (11, 1876896), (12, 1720488), (14, 1474704), (16, 1290366), (18, 1146992), (19, 1086624), (21, 983136), (22, 938448), (24, 860244), (28, 737352), (32, 645183), (33, 625632), (36, 573496), (38, 543312), (42, 491568), (44, 469224), (48, 430122), (49, 421344), (56, 368676), (57, 362208), (63, 327712), (66, 312816), (72, 286748), (76, 271656), (77, 268128), (84, 245784), (88, 234612), (96, 215061), (98, 210672), (99, 208544), (112, 184338), (114, 181104), (126, 163856), (132, 156408), (133, 155232), (144, 143374), (147, 140448), (152, 135828), (154, 134064), (168, 122892), (171, 120736), (176, 117306), (196, 105336), (198, 104272), (209, 98784), (224, 92169), (228, 90552), (231, 89376), (252, 81928), (264, 78204), (266, 77616), (288, 71687), (294, 70224), (304, 67914), (308, 67032), (336, 61446), (342, 60368), (343, 60192), (352, 58653), (392, 52668), (396, 52136), (399, 51744), (418, 49392), (441, 46816), (456, 45276), (462, 44688), (504, 40964), (528, 39102), (532, 38808), (539, 38304), (588, 35112), (608, 33957), (616, 33516), (627, 32928), (672, 30723), (684, 30184), (686, 30096), (693, 29792), (784, 26334), (792, 26068), (798, 25872), (836, 24696), (882, 23408), (912, 22638), (924, 22344), (931, 22176), (1008, 20482), (1029, 20064), (1056, 19551), (1064, 19404), (1078, 19152), (1176, 17556), (1197, 17248), (1232, 16758), (1254, 16464), (1368, 15092), (1372, 15048), (1386, 14896), (1463, 14112), (1568, 13167), (1584, 13034), (1596, 12936), (1617, 12768), (1672, 12348), (1764, 11704), (1824, 11319), (1848, 11172), (1862, 11088), (1881, 10976), (2016, 10241), (2058, 10032), (2128, 9702), (2156, 9576), (2352, 8778), (2394, 8624), (2464, 8379), (2508, 8232), (2736, 7546), (2744, 7524), (2772, 7448), (2793, 7392), (2926, 7056), (3087, 6688), (3168, 6517), (3192, 6468), (3234, 6384), (3344, 6174), (3528, 5852), (3696, 5586), (3724, 5544), (3762, 5488), (3773, 5472), (4116, 5016), (4256, 4851), (4312, 4788), (4389, 4704)]