22130980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 48199536

約数和(自身を除く): 26068556

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 137, 164, 197, 205, 274, 394, 410, 548, 685, 788, 820, 985, 1370, 1970, 2740, 3940, 5617, 8077, 11234, 16154, 22468, 26989, 28085, 32308, 40385, 53978, 56170, 80770, 107956, 112340, 134945, 161540, 269890, 539780, 1106549, 2213098, 4426196, 5532745, 11065490, 22130980]

約数ペア:

[(1, 22130980), (2, 11065490), (4, 5532745), (5, 4426196), (10, 2213098), (20, 1106549), (41, 539780), (82, 269890), (137, 161540), (164, 134945), (197, 112340), (205, 107956), (274, 80770), (394, 56170), (410, 53978), (548, 40385), (685, 32308), (788, 28085), (820, 26989), (985, 22468), (1370, 16154), (1970, 11234), (2740, 8077), (3940, 5617)]