21151996

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{1031}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 38836224

約数和(自身を除く): 17684228

約数列:

[1, 2, 4, 23, 46, 92, 223, 446, 892, 1031, 2062, 4124, 5129, 10258, 20516, 23713, 47426, 94852, 229913, 459826, 919652, 5287999, 10575998, 21151996]

約数ペア:

[(1, 21151996), (2, 10575998), (4, 5287999), (23, 919652), (46, 459826), (92, 229913), (223, 94852), (446, 47426), (892, 23713), (1031, 20516), (2062, 10258), (4124, 5129)]