21871091

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{631}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 25118208

約数和(自身を除く): 3247117

約数列:

[1, 11, 23, 137, 253, 631, 1507, 3151, 6941, 14513, 34661, 86447, 159643, 950917, 1988281, 21871091]

約数ペア:

[(1, 21871091), (11, 1988281), (23, 950917), (137, 159643), (253, 86447), (631, 34661), (1507, 14513), (3151, 6941)]