21271964

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 49351680

約数和(自身を除く): 28079716

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 29, 34, 46, 58, 67, 68, 92, 116, 119, 134, 161, 203, 238, 268, 322, 391, 406, 469, 476, 493, 644, 667, 782, 812, 938, 986, 1139, 1334, 1541, 1564, 1876, 1943, 1972, 2278, 2668, 2737, 3082, 3451, 3886, 4556, 4669, 5474, 6164, 6902, 7772, 7973, 9338, 10787, 10948, 11339, 13601, 13804, 15946, 18676, 21574, 22678, 26197, 27202, 31892, 33031, 43148, 44689, 45356, 52394, 54404, 66062, 79373, 89378, 104788, 132124, 158746, 178756, 183379, 231217, 312823, 317492, 366758, 462434, 625646, 733516, 759713, 924868, 1251292, 1519426, 3038852, 5317991, 10635982, 21271964]

約数ペア:

[(1, 21271964), (2, 10635982), (4, 5317991), (7, 3038852), (14, 1519426), (17, 1251292), (23, 924868), (28, 759713), (29, 733516), (34, 625646), (46, 462434), (58, 366758), (67, 317492), (68, 312823), (92, 231217), (116, 183379), (119, 178756), (134, 158746), (161, 132124), (203, 104788), (238, 89378), (268, 79373), (322, 66062), (391, 54404), (406, 52394), (469, 45356), (476, 44689), (493, 43148), (644, 33031), (667, 31892), (782, 27202), (812, 26197), (938, 22678), (986, 21574), (1139, 18676), (1334, 15946), (1541, 13804), (1564, 13601), (1876, 11339), (1943, 10948), (1972, 10787), (2278, 9338), (2668, 7973), (2737, 7772), (3082, 6902), (3451, 6164), (3886, 5474), (4556, 4669)]