21158574

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 27363666

約数列:

[1, 2, 3, 6, 17, 23, 29, 34, 46, 51, 58, 69, 87, 102, 138, 174, 311, 391, 493, 622, 667, 782, 933, 986, 1173, 1334, 1479, 1866, 2001, 2346, 2958, 4002, 5287, 7153, 9019, 10574, 11339, 14306, 15861, 18038, 21459, 22678, 27057, 31722, 34017, 42918, 54114, 68034, 121601, 153323, 207437, 243202, 306646, 364803, 414874, 459969, 622311, 729606, 919938, 1244622, 3526429, 7052858, 10579287, 21158574]

約数ペア:

[(1, 21158574), (2, 10579287), (3, 7052858), (6, 3526429), (17, 1244622), (23, 919938), (29, 729606), (34, 622311), (46, 459969), (51, 414874), (58, 364803), (69, 306646), (87, 243202), (102, 207437), (138, 153323), (174, 121601), (311, 68034), (391, 54114), (493, 42918), (622, 34017), (667, 31722), (782, 27057), (933, 22678), (986, 21459), (1173, 18038), (1334, 15861), (1479, 14306), (1866, 11339), (2001, 10574), (2346, 9019), (2958, 7153), (4002, 5287)]