21071116

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4937}}^1$

素因数の和:5049

約数の個数: 24

約数和(自身を含む): 40649616

約数和(自身を除く): 19578500

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2134, 4268, 4937, 9874, 19748, 54307, 108614, 217228, 478889, 957778, 1915556, 5267779, 10535558, 21071116]

約数ペア:

[(1, 21071116), (2, 10535558), (4, 5267779), (11, 1915556), (22, 957778), (44, 478889), (97, 217228), (194, 108614), (388, 54307), (1067, 19748), (2134, 9874), (4268, 4937)]