21661310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{1031}}^1$

素因数の和:1240

約数の個数: 32

約数和(自身を含む): 42799104

約数和(自身を除く): 21137794

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1031, 1910, 2062, 2101, 4202, 5155, 10310, 10505, 11341, 21010, 22682, 56705, 113410, 196921, 393842, 984605, 1969210, 2166131, 4332262, 10830655, 21661310]

約数ペア:

[(1, 21661310), (2, 10830655), (5, 4332262), (10, 2166131), (11, 1969210), (22, 984605), (55, 393842), (110, 196921), (191, 113410), (382, 56705), (955, 22682), (1031, 21010), (1910, 11341), (2062, 10505), (2101, 10310), (4202, 5155)]