21349845

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1307}}^1$

素因数の和:1343

約数の個数: 48

約数和(自身を含む): 41751360

約数和(自身を除く): 20401515

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 121, 135, 165, 297, 363, 495, 605, 1089, 1307, 1485, 1815, 3267, 3921, 5445, 6535, 11763, 14377, 16335, 19605, 35289, 43131, 58815, 71885, 129393, 158147, 176445, 215655, 388179, 474441, 646965, 790735, 1423323, 1940895, 2372205, 4269969, 7116615, 21349845]

約数ペア:

[(1, 21349845), (3, 7116615), (5, 4269969), (9, 2372205), (11, 1940895), (15, 1423323), (27, 790735), (33, 646965), (45, 474441), (55, 388179), (99, 215655), (121, 176445), (135, 158147), (165, 129393), (297, 71885), (363, 58815), (495, 43131), (605, 35289), (1089, 19605), (1307, 16335), (1485, 14377), (1815, 11763), (3267, 6535), (3921, 5445)]