21444556

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 46884096

約数和(自身を除く): 25439540

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 67, 71, 92, 98, 134, 142, 161, 196, 268, 284, 322, 469, 497, 644, 938, 994, 1127, 1541, 1633, 1876, 1988, 2254, 3082, 3266, 3283, 3479, 4508, 4757, 6164, 6532, 6566, 6958, 9514, 10787, 11431, 13132, 13916, 19028, 21574, 22862, 33299, 43148, 45724, 66598, 75509, 80017, 109411, 133196, 151018, 160034, 218822, 233093, 302036, 320068, 437644, 466186, 765877, 932372, 1531754, 3063508, 5361139, 10722278, 21444556]

約数ペア:

[(1, 21444556), (2, 10722278), (4, 5361139), (7, 3063508), (14, 1531754), (23, 932372), (28, 765877), (46, 466186), (49, 437644), (67, 320068), (71, 302036), (92, 233093), (98, 218822), (134, 160034), (142, 151018), (161, 133196), (196, 109411), (268, 80017), (284, 75509), (322, 66598), (469, 45724), (497, 43148), (644, 33299), (938, 22862), (994, 21574), (1127, 19028), (1541, 13916), (1633, 13132), (1876, 11431), (1988, 10787), (2254, 9514), (3082, 6958), (3266, 6566), (3283, 6532), (3479, 6164), (4508, 4757)]