21046311

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:138

約数の個数: 80

約数和(自身を含む): 39029760

約数和(自身を除く): 17983449

約数列:

[1, 3, 9, 11, 13, 23, 27, 33, 39, 69, 79, 81, 99, 117, 143, 207, 237, 253, 297, 299, 351, 429, 621, 711, 759, 869, 891, 897, 1027, 1053, 1287, 1817, 1863, 2133, 2277, 2607, 2691, 3081, 3289, 3861, 5451, 6399, 6831, 7821, 8073, 9243, 9867, 11297, 11583, 16353, 19987, 20493, 23463, 23621, 24219, 27729, 29601, 33891, 49059, 59961, 70389, 70863, 83187, 88803, 101673, 147177, 179883, 212589, 259831, 266409, 305019, 539649, 637767, 779493, 915057, 1618947, 1913301, 2338479, 7015437, 21046311]

約数ペア:

[(1, 21046311), (3, 7015437), (9, 2338479), (11, 1913301), (13, 1618947), (23, 915057), (27, 779493), (33, 637767), (39, 539649), (69, 305019), (79, 266409), (81, 259831), (99, 212589), (117, 179883), (143, 147177), (207, 101673), (237, 88803), (253, 83187), (297, 70863), (299, 70389), (351, 59961), (429, 49059), (621, 33891), (711, 29601), (759, 27729), (869, 24219), (891, 23621), (897, 23463), (1027, 20493), (1053, 19987), (1287, 16353), (1817, 11583), (1863, 11297), (2133, 9867), (2277, 9243), (2607, 8073), (2691, 7821), (3081, 6831), (3289, 6399), (3861, 5451)]