21606080

素因数分解:

$2^6\times 5^1\times {\mathrm{251}}^1\times {\mathrm{269}}^1$

素因数の和:537

約数の個数: 56

約数和(自身を含む): 51846480

約数和(自身を除く): 30240400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 251, 269, 320, 502, 538, 1004, 1076, 1255, 1345, 2008, 2152, 2510, 2690, 4016, 4304, 5020, 5380, 8032, 8608, 10040, 10760, 16064, 17216, 20080, 21520, 40160, 43040, 67519, 80320, 86080, 135038, 270076, 337595, 540152, 675190, 1080304, 1350380, 2160608, 2700760, 4321216, 5401520, 10803040, 21606080]

約数ペア:

[(1, 21606080), (2, 10803040), (4, 5401520), (5, 4321216), (8, 2700760), (10, 2160608), (16, 1350380), (20, 1080304), (32, 675190), (40, 540152), (64, 337595), (80, 270076), (160, 135038), (251, 86080), (269, 80320), (320, 67519), (502, 43040), (538, 40160), (1004, 21520), (1076, 20080), (1255, 17216), (1345, 16064), (2008, 10760), (2152, 10040), (2510, 8608), (2690, 8032), (4016, 5380), (4304, 5020)]