20217736

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1427}}^1$

素因数の和:1474

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 29133944

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 44, 46, 56, 77, 88, 92, 154, 161, 184, 253, 308, 322, 506, 616, 644, 1012, 1288, 1427, 1771, 2024, 2854, 3542, 5708, 7084, 9989, 11416, 14168, 15697, 19978, 31394, 32821, 39956, 62788, 65642, 79912, 109879, 125576, 131284, 219758, 229747, 262568, 361031, 439516, 459494, 722062, 879032, 918988, 1444124, 1837976, 2527217, 2888248, 5054434, 10108868, 20217736]

約数ペア:

[(1, 20217736), (2, 10108868), (4, 5054434), (7, 2888248), (8, 2527217), (11, 1837976), (14, 1444124), (22, 918988), (23, 879032), (28, 722062), (44, 459494), (46, 439516), (56, 361031), (77, 262568), (88, 229747), (92, 219758), (154, 131284), (161, 125576), (184, 109879), (253, 79912), (308, 65642), (322, 62788), (506, 39956), (616, 32821), (644, 31394), (1012, 19978), (1288, 15697), (1427, 14168), (1771, 11416), (2024, 9989), (2854, 7084), (3542, 5708)]