21405703

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{1013}}^1$

素因数の和:1154

約数の個数: 16

約数和(自身を含む): 24968736

約数和(自身を除く): 3563033

約数列:

[1, 11, 17, 113, 187, 1013, 1243, 1921, 11143, 17221, 21131, 114469, 189431, 1259159, 1945973, 21405703]

約数ペア:

[(1, 21405703), (11, 1945973), (17, 1259159), (113, 189431), (187, 114469), (1013, 21131), (1243, 17221), (1921, 11143)]