21361912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26538248

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 71, 88, 104, 142, 143, 263, 284, 286, 526, 568, 572, 781, 923, 1052, 1144, 1562, 1846, 2104, 2893, 3124, 3419, 3692, 5786, 6248, 6838, 7384, 10153, 11572, 13676, 18673, 20306, 23144, 27352, 37346, 37609, 40612, 74692, 75218, 81224, 149384, 150436, 205403, 242749, 300872, 410806, 485498, 821612, 970996, 1643224, 1941992, 2670239, 5340478, 10680956, 21361912]

約数ペア:

[(1, 21361912), (2, 10680956), (4, 5340478), (8, 2670239), (11, 1941992), (13, 1643224), (22, 970996), (26, 821612), (44, 485498), (52, 410806), (71, 300872), (88, 242749), (104, 205403), (142, 150436), (143, 149384), (263, 81224), (284, 75218), (286, 74692), (526, 40612), (568, 37609), (572, 37346), (781, 27352), (923, 23144), (1052, 20306), (1144, 18673), (1562, 13676), (1846, 11572), (2104, 10153), (2893, 7384), (3124, 6838), (3419, 6248), (3692, 5786)]