20961248

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:256

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 31874080

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 47, 56, 77, 88, 94, 112, 154, 176, 181, 188, 224, 308, 329, 352, 362, 376, 517, 616, 658, 724, 752, 1034, 1232, 1267, 1316, 1448, 1504, 1991, 2068, 2464, 2534, 2632, 2896, 3619, 3982, 4136, 5068, 5264, 5792, 7238, 7964, 8272, 8507, 10136, 10528, 13937, 14476, 15928, 16544, 17014, 20272, 27874, 28952, 31856, 34028, 40544, 55748, 57904, 59549, 63712, 68056, 93577, 111496, 115808, 119098, 136112, 187154, 222992, 238196, 272224, 374308, 445984, 476392, 655039, 748616, 952784, 1310078, 1497232, 1905568, 2620156, 2994464, 5240312, 10480624, 20961248]

約数ペア:

[(1, 20961248), (2, 10480624), (4, 5240312), (7, 2994464), (8, 2620156), (11, 1905568), (14, 1497232), (16, 1310078), (22, 952784), (28, 748616), (32, 655039), (44, 476392), (47, 445984), (56, 374308), (77, 272224), (88, 238196), (94, 222992), (112, 187154), (154, 136112), (176, 119098), (181, 115808), (188, 111496), (224, 93577), (308, 68056), (329, 63712), (352, 59549), (362, 57904), (376, 55748), (517, 40544), (616, 34028), (658, 31856), (724, 28952), (752, 27874), (1034, 20272), (1232, 17014), (1267, 16544), (1316, 15928), (1448, 14476), (1504, 13937), (1991, 10528), (2068, 10136), (2464, 8507), (2534, 8272), (2632, 7964), (2896, 7238), (3619, 5792), (3982, 5264), (4136, 5068)]