21897904

素因数分解:

$2^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:123

約数の個数: 120

約数和(自身を含む): 54960768

約数和(自身を除く): 33062864

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 31, 34, 49, 53, 56, 62, 68, 98, 106, 112, 119, 124, 136, 196, 212, 217, 238, 248, 272, 371, 392, 424, 434, 476, 496, 527, 742, 784, 833, 848, 868, 901, 952, 1054, 1484, 1519, 1643, 1666, 1736, 1802, 1904, 2108, 2597, 2968, 3038, 3286, 3332, 3472, 3604, 3689, 4216, 5194, 5936, 6076, 6307, 6572, 6664, 7208, 7378, 8432, 10388, 11501, 12152, 12614, 13144, 13328, 14416, 14756, 20776, 23002, 24304, 25228, 25823, 26288, 27931, 29512, 41552, 44149, 46004, 50456, 51646, 55862, 59024, 80507, 88298, 92008, 100912, 103292, 111724, 161014, 176596, 184016, 195517, 206584, 223448, 322028, 353192, 391034, 413168, 446896, 644056, 706384, 782068, 1288112, 1368619, 1564136, 2737238, 3128272, 5474476, 10948952, 21897904]

約数ペア:

[(1, 21897904), (2, 10948952), (4, 5474476), (7, 3128272), (8, 2737238), (14, 1564136), (16, 1368619), (17, 1288112), (28, 782068), (31, 706384), (34, 644056), (49, 446896), (53, 413168), (56, 391034), (62, 353192), (68, 322028), (98, 223448), (106, 206584), (112, 195517), (119, 184016), (124, 176596), (136, 161014), (196, 111724), (212, 103292), (217, 100912), (238, 92008), (248, 88298), (272, 80507), (371, 59024), (392, 55862), (424, 51646), (434, 50456), (476, 46004), (496, 44149), (527, 41552), (742, 29512), (784, 27931), (833, 26288), (848, 25823), (868, 25228), (901, 24304), (952, 23002), (1054, 20776), (1484, 14756), (1519, 14416), (1643, 13328), (1666, 13144), (1736, 12614), (1802, 12152), (1904, 11501), (2108, 10388), (2597, 8432), (2968, 7378), (3038, 7208), (3286, 6664), (3332, 6572), (3472, 6307), (3604, 6076), (3689, 5936), (4216, 5194)]