21896901

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 36756720

約数和(自身を除く): 14859819

約数列:

[1, 3, 9, 13, 17, 39, 51, 101, 109, 117, 153, 221, 303, 327, 663, 909, 981, 1313, 1417, 1717, 1853, 1989, 3939, 4251, 5151, 5559, 11009, 11817, 12753, 15453, 16677, 22321, 24089, 33027, 66963, 72267, 99081, 143117, 187153, 200889, 216801, 429351, 561459, 1288053, 1684377, 2432989, 7298967, 21896901]

約数ペア:

[(1, 21896901), (3, 7298967), (9, 2432989), (13, 1684377), (17, 1288053), (39, 561459), (51, 429351), (101, 216801), (109, 200889), (117, 187153), (153, 143117), (221, 99081), (303, 72267), (327, 66963), (663, 33027), (909, 24089), (981, 22321), (1313, 16677), (1417, 15453), (1717, 12753), (1853, 11817), (1989, 11009), (3939, 5559), (4251, 5151)]