21355080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{709}}^1$

素因数の和:974

約数の個数: 64

約数和(自身を含む): 64411200

約数和(自身を除く): 43056120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 251, 502, 709, 753, 1004, 1255, 1418, 1506, 2008, 2127, 2510, 2836, 3012, 3545, 3765, 4254, 5020, 5672, 6024, 7090, 7530, 8508, 10040, 10635, 14180, 15060, 17016, 21270, 28360, 30120, 42540, 85080, 177959, 355918, 533877, 711836, 889795, 1067754, 1423672, 1779590, 2135508, 2669385, 3559180, 4271016, 5338770, 7118360, 10677540, 21355080]

約数ペア:

[(1, 21355080), (2, 10677540), (3, 7118360), (4, 5338770), (5, 4271016), (6, 3559180), (8, 2669385), (10, 2135508), (12, 1779590), (15, 1423672), (20, 1067754), (24, 889795), (30, 711836), (40, 533877), (60, 355918), (120, 177959), (251, 85080), (502, 42540), (709, 30120), (753, 28360), (1004, 21270), (1255, 17016), (1418, 15060), (1506, 14180), (2008, 10635), (2127, 10040), (2510, 8508), (2836, 7530), (3012, 7090), (3545, 6024), (3765, 5672), (4254, 5020)]