21234681

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{607}}^1$

素因数の和:662

約数の個数: 36

約数和(自身を含む): 34714368

約数和(自身を除く): 13479687

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 607, 897, 1521, 1821, 2691, 3887, 5463, 7891, 11661, 13961, 23673, 34983, 41883, 71019, 102583, 125649, 181493, 307749, 544479, 923247, 1633437, 2359409, 7078227, 21234681]

約数ペア:

[(1, 21234681), (3, 7078227), (9, 2359409), (13, 1633437), (23, 923247), (39, 544479), (69, 307749), (117, 181493), (169, 125649), (207, 102583), (299, 71019), (507, 41883), (607, 34983), (897, 23673), (1521, 13961), (1821, 11661), (2691, 7891), (3887, 5463)]