21406836

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 57379392

約数和(自身を除く): 35972556

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 23, 33, 44, 46, 66, 69, 92, 121, 132, 138, 242, 253, 276, 363, 484, 506, 641, 726, 759, 1012, 1282, 1452, 1518, 1923, 2564, 2783, 3036, 3846, 5566, 7051, 7692, 8349, 11132, 14102, 14743, 16698, 21153, 28204, 29486, 33396, 42306, 44229, 58972, 77561, 84612, 88458, 155122, 162173, 176916, 232683, 310244, 324346, 465366, 486519, 648692, 930732, 973038, 1783903, 1946076, 3567806, 5351709, 7135612, 10703418, 21406836]

約数ペア:

[(1, 21406836), (2, 10703418), (3, 7135612), (4, 5351709), (6, 3567806), (11, 1946076), (12, 1783903), (22, 973038), (23, 930732), (33, 648692), (44, 486519), (46, 465366), (66, 324346), (69, 310244), (92, 232683), (121, 176916), (132, 162173), (138, 155122), (242, 88458), (253, 84612), (276, 77561), (363, 58972), (484, 44229), (506, 42306), (641, 33396), (726, 29486), (759, 28204), (1012, 21153), (1282, 16698), (1452, 14743), (1518, 14102), (1923, 11132), (2564, 8349), (2783, 7692), (3036, 7051), (3846, 5566)]