21390622

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:744

約数の個数: 24

約数和(自身を含む): 35555688

約数和(自身を除く): 14165066

約数列:

[1, 2, 11, 22, 121, 157, 242, 314, 563, 1126, 1727, 3454, 6193, 12386, 18997, 37994, 68123, 88391, 136246, 176782, 972301, 1944602, 10695311, 21390622]

約数ペア:

[(1, 21390622), (2, 10695311), (11, 1944602), (22, 972301), (121, 176782), (157, 136246), (242, 88391), (314, 68123), (563, 37994), (1126, 18997), (1727, 12386), (3454, 6193)]