21000337456

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1\times {\mathrm{971}}^1$

素因数の和:1347

約数の個数: 160

約数和(自身を含む): 50783749632

約数和(自身を除く): 29783412176

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 37, 56, 68, 74, 112, 119, 136, 148, 238, 259, 272, 296, 307, 476, 518, 592, 614, 629, 952, 971, 1036, 1228, 1258, 1904, 1942, 2072, 2149, 2456, 2516, 3884, 4144, 4298, 4403, 4912, 5032, 5219, 6797, 7768, 8596, 8806, 10064, 10438, 11359, 13594, 15536, 16507, 17192, 17612, 20876, 22718, 27188, 33014, 34384, 35224, 35927, 36533, 41752, 45436, 54376, 66028, 70448, 71854, 73066, 79513, 83504, 90872, 108752, 115549, 132056, 143708, 146132, 159026, 181744, 193103, 231098, 251489, 264112, 287416, 292264, 298097, 318052, 386206, 462196, 502978, 574832, 584528, 596194, 610759, 636104, 772412, 924392, 1005956, 1192388, 1221518, 1272208, 1351721, 1544824, 1848784, 2011912, 2086679, 2384776, 2443036, 2703442, 3089648, 4023824, 4173358, 4275313, 4769552, 4886072, 5067649, 5406884, 8346716, 8550626, 9772144, 10135298, 10813768, 11029589, 16693432, 17101252, 20270596, 21627536, 22059178, 33386864, 34202504, 35473543, 40541192, 44118356, 68405008, 70947086, 77207123, 81082384, 88236712, 141894172, 154414246, 176473424, 187503013, 283788344, 308828492, 375006026, 567576688, 617656984, 750012052, 1235313968, 1312521091, 1500024104, 2625042182, 3000048208, 5250084364, 10500168728, 21000337456]

約数ペア:

[(1, 21000337456), (2, 10500168728), (4, 5250084364), (7, 3000048208), (8, 2625042182), (14, 1500024104), (16, 1312521091), (17, 1235313968), (28, 750012052), (34, 617656984), (37, 567576688), (56, 375006026), (68, 308828492), (74, 283788344), (112, 187503013), (119, 176473424), (136, 154414246), (148, 141894172), (238, 88236712), (259, 81082384), (272, 77207123), (296, 70947086), (307, 68405008), (476, 44118356), (518, 40541192), (592, 35473543), (614, 34202504), (629, 33386864), (952, 22059178), (971, 21627536), (1036, 20270596), (1228, 17101252), (1258, 16693432), (1904, 11029589), (1942, 10813768), (2072, 10135298), (2149, 9772144), (2456, 8550626), (2516, 8346716), (3884, 5406884), (4144, 5067649), (4298, 4886072), (4403, 4769552), (4912, 4275313), (5032, 4173358), (5219, 4023824), (6797, 3089648), (7768, 2703442), (8596, 2443036), (8806, 2384776), (10064, 2086679), (10438, 2011912), (11359, 1848784), (13594, 1544824), (15536, 1351721), (16507, 1272208), (17192, 1221518), (17612, 1192388), (20876, 1005956), (22718, 924392), (27188, 772412), (33014, 636104), (34384, 610759), (35224, 596194), (35927, 584528), (36533, 574832), (41752, 502978), (45436, 462196), (54376, 386206), (66028, 318052), (70448, 298097), (71854, 292264), (73066, 287416), (79513, 264112), (83504, 251489), (90872, 231098), (108752, 193103), (115549, 181744), (132056, 159026), (143708, 146132)]