21251835

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1301}}^1$

素因数の和:1337

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 20308005

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 121, 135, 165, 297, 363, 495, 605, 1089, 1301, 1485, 1815, 3267, 3903, 5445, 6505, 11709, 14311, 16335, 19515, 35127, 42933, 58545, 71555, 128799, 157421, 175635, 214665, 386397, 472263, 643995, 787105, 1416789, 1931985, 2361315, 4250367, 7083945, 21251835]

約数ペア:

[(1, 21251835), (3, 7083945), (5, 4250367), (9, 2361315), (11, 1931985), (15, 1416789), (27, 787105), (33, 643995), (45, 472263), (55, 386397), (99, 214665), (121, 175635), (135, 157421), (165, 128799), (297, 71555), (363, 58545), (495, 42933), (605, 35127), (1089, 19515), (1301, 16335), (1485, 14311), (1815, 11709), (3267, 6505), (3903, 5445)]