21064914

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{811}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 51838080

約数和(自身を除く): 30773166

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 37, 39, 54, 74, 78, 111, 117, 222, 234, 333, 351, 481, 666, 702, 811, 962, 999, 1443, 1622, 1998, 2433, 2886, 4329, 4866, 7299, 8658, 10543, 12987, 14598, 21086, 21897, 25974, 30007, 31629, 43794, 60014, 63258, 90021, 94887, 180042, 189774, 270063, 284661, 390091, 540126, 569322, 780182, 810189, 1170273, 1620378, 2340546, 3510819, 7021638, 10532457, 21064914]

約数ペア:

[(1, 21064914), (2, 10532457), (3, 7021638), (6, 3510819), (9, 2340546), (13, 1620378), (18, 1170273), (26, 810189), (27, 780182), (37, 569322), (39, 540126), (54, 390091), (74, 284661), (78, 270063), (111, 189774), (117, 180042), (222, 94887), (234, 90021), (333, 63258), (351, 60014), (481, 43794), (666, 31629), (702, 30007), (811, 25974), (962, 21897), (999, 21086), (1443, 14598), (1622, 12987), (1998, 10543), (2433, 8658), (2886, 7299), (4329, 4866)]