21580394

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{42649}}^1$

素因数の和:42685

約数の個数: 16

約数和(自身を含む): 36849600

約数和(自身を除く): 15269206

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 42649, 85298, 469139, 938278, 980927, 1961854, 10790197, 21580394]

約数ペア:

[(1, 21580394), (2, 10790197), (11, 1961854), (22, 980927), (23, 938278), (46, 469139), (253, 85298), (506, 42649)]