21764457

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1879}}^1$

素因数の和:1915

約数の個数: 40

約数和(自身を含む): 38216640

約数和(自身を除く): 16452183

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 297, 351, 429, 891, 1053, 1287, 1879, 3861, 5637, 11583, 16911, 20669, 24427, 50733, 62007, 73281, 152199, 186021, 219843, 268697, 558063, 659529, 806091, 1674189, 1978587, 2418273, 7254819, 21764457]

約数ペア:

[(1, 21764457), (3, 7254819), (9, 2418273), (11, 1978587), (13, 1674189), (27, 806091), (33, 659529), (39, 558063), (81, 268697), (99, 219843), (117, 186021), (143, 152199), (297, 73281), (351, 62007), (429, 50733), (891, 24427), (1053, 20669), (1287, 16911), (1879, 11583), (3861, 5637)]