21193563

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1\times {\mathrm{443}}^1$

素因数の和:914

約数の個数: 16

約数和(自身を含む): 29154816

約数和(自身を除く): 7961253

約数列:

[1, 3, 37, 111, 431, 443, 1293, 1329, 15947, 16391, 47841, 49173, 190933, 572799, 7064521, 21193563]

約数ペア:

[(1, 21193563), (3, 7064521), (37, 572799), (111, 190933), (431, 49173), (443, 47841), (1293, 16391), (1329, 15947)]