20765976

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{661}}^1$

素因数の和:705

約数の個数: 128

約数和(自身を含む): 68636160

約数和(自身を除く): 47870184

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 17, 21, 22, 24, 28, 33, 34, 42, 44, 51, 56, 66, 68, 77, 84, 88, 102, 119, 132, 136, 154, 168, 187, 204, 231, 238, 264, 308, 357, 374, 408, 462, 476, 561, 616, 661, 714, 748, 924, 952, 1122, 1309, 1322, 1428, 1496, 1848, 1983, 2244, 2618, 2644, 2856, 3927, 3966, 4488, 4627, 5236, 5288, 7271, 7854, 7932, 9254, 10472, 11237, 13881, 14542, 15708, 15864, 18508, 21813, 22474, 27762, 29084, 31416, 33711, 37016, 43626, 44948, 50897, 55524, 58168, 67422, 78659, 87252, 89896, 101794, 111048, 123607, 134844, 152691, 157318, 174504, 203588, 235977, 247214, 269688, 305382, 314636, 370821, 407176, 471954, 494428, 610764, 629272, 741642, 865249, 943908, 988856, 1221528, 1483284, 1730498, 1887816, 2595747, 2966568, 3460996, 5191494, 6921992, 10382988, 20765976]

約数ペア:

[(1, 20765976), (2, 10382988), (3, 6921992), (4, 5191494), (6, 3460996), (7, 2966568), (8, 2595747), (11, 1887816), (12, 1730498), (14, 1483284), (17, 1221528), (21, 988856), (22, 943908), (24, 865249), (28, 741642), (33, 629272), (34, 610764), (42, 494428), (44, 471954), (51, 407176), (56, 370821), (66, 314636), (68, 305382), (77, 269688), (84, 247214), (88, 235977), (102, 203588), (119, 174504), (132, 157318), (136, 152691), (154, 134844), (168, 123607), (187, 111048), (204, 101794), (231, 89896), (238, 87252), (264, 78659), (308, 67422), (357, 58168), (374, 55524), (408, 50897), (462, 44948), (476, 43626), (561, 37016), (616, 33711), (661, 31416), (714, 29084), (748, 27762), (924, 22474), (952, 21813), (1122, 18508), (1309, 15864), (1322, 15708), (1428, 14542), (1496, 13881), (1848, 11237), (1983, 10472), (2244, 9254), (2618, 7932), (2644, 7854), (2856, 7271), (3927, 5288), (3966, 5236), (4488, 4627)]