21856023

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^2$

素因数の和:113

約数の個数: 54

約数和(自身を含む): 39346632

約数和(自身を除く): 17490609

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 361, 399, 589, 651, 961, 1083, 1197, 1767, 1953, 2527, 2883, 3249, 4123, 5301, 6727, 7581, 8649, 11191, 12369, 18259, 20181, 22743, 33573, 37107, 54777, 60543, 78337, 100719, 127813, 164331, 235011, 346921, 383439, 705033, 1040763, 1150317, 2428447, 3122289, 7285341, 21856023]

約数ペア:

[(1, 21856023), (3, 7285341), (7, 3122289), (9, 2428447), (19, 1150317), (21, 1040763), (31, 705033), (57, 383439), (63, 346921), (93, 235011), (133, 164331), (171, 127813), (217, 100719), (279, 78337), (361, 60543), (399, 54777), (589, 37107), (651, 33573), (961, 22743), (1083, 20181), (1197, 18259), (1767, 12369), (1953, 11191), (2527, 8649), (2883, 7581), (3249, 6727), (4123, 5301)]