21722008

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 51321600

約数和(自身を除く): 29599592

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 179, 197, 308, 358, 394, 616, 716, 788, 1253, 1379, 1432, 1576, 1969, 2167, 2506, 2758, 3938, 4334, 5012, 5516, 7876, 8668, 10024, 11032, 13783, 15169, 15752, 17336, 27566, 30338, 35263, 55132, 60676, 70526, 110264, 121352, 141052, 246841, 282104, 387893, 493682, 775786, 987364, 1551572, 1974728, 2715251, 3103144, 5430502, 10861004, 21722008]

約数ペア:

[(1, 21722008), (2, 10861004), (4, 5430502), (7, 3103144), (8, 2715251), (11, 1974728), (14, 1551572), (22, 987364), (28, 775786), (44, 493682), (56, 387893), (77, 282104), (88, 246841), (154, 141052), (179, 121352), (197, 110264), (308, 70526), (358, 60676), (394, 55132), (616, 35263), (716, 30338), (788, 27566), (1253, 17336), (1379, 15752), (1432, 15169), (1576, 13783), (1969, 11032), (2167, 10024), (2506, 8668), (2758, 7876), (3938, 5516), (4334, 5012)]