20945904

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:247

約数の個数: 160

約数和(自身を含む): 69281280

約数和(自身を除く): 48335376

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 19, 21, 24, 28, 34, 38, 42, 48, 51, 56, 57, 68, 76, 84, 102, 112, 114, 119, 133, 136, 152, 168, 193, 204, 228, 238, 266, 272, 304, 323, 336, 357, 386, 399, 408, 456, 476, 532, 579, 646, 714, 772, 798, 816, 912, 952, 969, 1064, 1158, 1292, 1351, 1428, 1544, 1596, 1904, 1938, 2128, 2261, 2316, 2584, 2702, 2856, 3088, 3192, 3281, 3667, 3876, 4053, 4522, 4632, 5168, 5404, 5712, 6384, 6562, 6783, 7334, 7752, 8106, 9044, 9264, 9843, 10808, 11001, 13124, 13566, 14668, 15504, 16212, 18088, 19686, 21616, 22002, 22967, 25669, 26248, 27132, 29336, 32424, 36176, 39372, 44004, 45934, 51338, 52496, 54264, 58672, 62339, 64848, 68901, 77007, 78744, 88008, 91868, 102676, 108528, 124678, 137802, 154014, 157488, 176016, 183736, 187017, 205352, 249356, 275604, 308028, 367472, 374034, 410704, 436373, 498712, 551208, 616056, 748068, 872746, 997424, 1102416, 1232112, 1309119, 1496136, 1745492, 2618238, 2992272, 3490984, 5236476, 6981968, 10472952, 20945904]

約数ペア:

[(1, 20945904), (2, 10472952), (3, 6981968), (4, 5236476), (6, 3490984), (7, 2992272), (8, 2618238), (12, 1745492), (14, 1496136), (16, 1309119), (17, 1232112), (19, 1102416), (21, 997424), (24, 872746), (28, 748068), (34, 616056), (38, 551208), (42, 498712), (48, 436373), (51, 410704), (56, 374034), (57, 367472), (68, 308028), (76, 275604), (84, 249356), (102, 205352), (112, 187017), (114, 183736), (119, 176016), (133, 157488), (136, 154014), (152, 137802), (168, 124678), (193, 108528), (204, 102676), (228, 91868), (238, 88008), (266, 78744), (272, 77007), (304, 68901), (323, 64848), (336, 62339), (357, 58672), (386, 54264), (399, 52496), (408, 51338), (456, 45934), (476, 44004), (532, 39372), (579, 36176), (646, 32424), (714, 29336), (772, 27132), (798, 26248), (816, 25669), (912, 22967), (952, 22002), (969, 21616), (1064, 19686), (1158, 18088), (1292, 16212), (1351, 15504), (1428, 14668), (1544, 13566), (1596, 13124), (1904, 11001), (1938, 10808), (2128, 9843), (2261, 9264), (2316, 9044), (2584, 8106), (2702, 7752), (2856, 7334), (3088, 6783), (3192, 6562), (3281, 6384), (3667, 5712), (3876, 5404), (4053, 5168), (4522, 4632)]