21321144

素因数分解:

$2^3\times 3^4\times {\mathrm{13}}^1\times {\mathrm{2531}}^1$

素因数の和:2562

約数の個数: 80

約数和(自身を含む): 64338120

約数和(自身を除く): 43016976

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 81, 104, 108, 117, 156, 162, 216, 234, 312, 324, 351, 468, 648, 702, 936, 1053, 1404, 2106, 2531, 2808, 4212, 5062, 7593, 8424, 10124, 15186, 20248, 22779, 30372, 32903, 45558, 60744, 65806, 68337, 91116, 98709, 131612, 136674, 182232, 197418, 205011, 263224, 273348, 296127, 394836, 410022, 546696, 592254, 789672, 820044, 888381, 1184508, 1640088, 1776762, 2369016, 2665143, 3553524, 5330286, 7107048, 10660572, 21321144]

約数ペア:

[(1, 21321144), (2, 10660572), (3, 7107048), (4, 5330286), (6, 3553524), (8, 2665143), (9, 2369016), (12, 1776762), (13, 1640088), (18, 1184508), (24, 888381), (26, 820044), (27, 789672), (36, 592254), (39, 546696), (52, 410022), (54, 394836), (72, 296127), (78, 273348), (81, 263224), (104, 205011), (108, 197418), (117, 182232), (156, 136674), (162, 131612), (216, 98709), (234, 91116), (312, 68337), (324, 65806), (351, 60744), (468, 45558), (648, 32903), (702, 30372), (936, 22779), (1053, 20248), (1404, 15186), (2106, 10124), (2531, 8424), (2808, 7593), (4212, 5062)]