21000570651

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{2459}}^1\times {\mathrm{4721}}^1$

素因数の和:7256

約数の個数: 32

約数和(自身を含む): 31595846400

約数和(自身を除く): 10595275749

約数列:

[1, 3, 9, 27, 67, 201, 603, 1809, 2459, 4721, 7377, 14163, 22131, 42489, 66393, 127467, 164753, 316307, 494259, 948921, 1482777, 2846763, 4448331, 8540289, 11608939, 34826817, 104480451, 313441353, 777798913, 2333396739, 7000190217, 21000570651]

約数ペア:

[(1, 21000570651), (3, 7000190217), (9, 2333396739), (27, 777798913), (67, 313441353), (201, 104480451), (603, 34826817), (1809, 11608939), (2459, 8540289), (4721, 4448331), (7377, 2846763), (14163, 1482777), (22131, 948921), (42489, 494259), (66393, 316307), (127467, 164753)]