20265784

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27634376

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 167, 197, 308, 334, 394, 616, 668, 788, 1169, 1336, 1379, 1576, 1837, 2167, 2338, 2758, 3674, 4334, 4676, 5516, 7348, 8668, 9352, 11032, 12859, 14696, 15169, 17336, 25718, 30338, 32899, 51436, 60676, 65798, 102872, 121352, 131596, 230293, 263192, 361889, 460586, 723778, 921172, 1447556, 1842344, 2533223, 2895112, 5066446, 10132892, 20265784]

約数ペア:

[(1, 20265784), (2, 10132892), (4, 5066446), (7, 2895112), (8, 2533223), (11, 1842344), (14, 1447556), (22, 921172), (28, 723778), (44, 460586), (56, 361889), (77, 263192), (88, 230293), (154, 131596), (167, 121352), (197, 102872), (308, 65798), (334, 60676), (394, 51436), (616, 32899), (668, 30338), (788, 25718), (1169, 17336), (1336, 15169), (1379, 14696), (1576, 12859), (1837, 11032), (2167, 9352), (2338, 8668), (2758, 7348), (3674, 5516), (4334, 4676)]