20642776

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:125

約数の個数: 128

約数和(自身を含む): 53084160

約数和(自身を除く): 32441384

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 31, 44, 46, 47, 56, 62, 77, 88, 92, 94, 124, 154, 161, 184, 188, 217, 248, 253, 308, 322, 329, 341, 376, 434, 506, 517, 616, 644, 658, 682, 713, 868, 1012, 1034, 1081, 1288, 1316, 1364, 1426, 1457, 1736, 1771, 2024, 2068, 2162, 2387, 2632, 2728, 2852, 2914, 3542, 3619, 4136, 4324, 4774, 4991, 5704, 5828, 7084, 7238, 7567, 7843, 8648, 9548, 9982, 10199, 11656, 11891, 14168, 14476, 15134, 15686, 16027, 19096, 19964, 20398, 23782, 28952, 30268, 31372, 32054, 33511, 39928, 40796, 47564, 54901, 60536, 62744, 64108, 67022, 81592, 83237, 95128, 109802, 112189, 128216, 134044, 166474, 219604, 224378, 234577, 268088, 332948, 368621, 439208, 448756, 469154, 665896, 737242, 897512, 938308, 1474484, 1876616, 2580347, 2948968, 5160694, 10321388, 20642776]

約数ペア:

[(1, 20642776), (2, 10321388), (4, 5160694), (7, 2948968), (8, 2580347), (11, 1876616), (14, 1474484), (22, 938308), (23, 897512), (28, 737242), (31, 665896), (44, 469154), (46, 448756), (47, 439208), (56, 368621), (62, 332948), (77, 268088), (88, 234577), (92, 224378), (94, 219604), (124, 166474), (154, 134044), (161, 128216), (184, 112189), (188, 109802), (217, 95128), (248, 83237), (253, 81592), (308, 67022), (322, 64108), (329, 62744), (341, 60536), (376, 54901), (434, 47564), (506, 40796), (517, 39928), (616, 33511), (644, 32054), (658, 31372), (682, 30268), (713, 28952), (868, 23782), (1012, 20398), (1034, 19964), (1081, 19096), (1288, 16027), (1316, 15686), (1364, 15134), (1426, 14476), (1457, 14168), (1736, 11891), (1771, 11656), (2024, 10199), (2068, 9982), (2162, 9548), (2387, 8648), (2632, 7843), (2728, 7567), (2852, 7238), (2914, 7084), (3542, 5828), (3619, 5704), (4136, 4991), (4324, 4774)]