21356530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12637}}^1$

素因数の和:12670

約数の個数: 24

約数和(自身を含む): 41629572

約数和(自身を除く): 20273042

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12637, 25274, 63185, 126370, 164281, 328562, 821405, 1642810, 2135653, 4271306, 10678265, 21356530]

約数ペア:

[(1, 21356530), (2, 10678265), (5, 4271306), (10, 2135653), (13, 1642810), (26, 821405), (65, 328562), (130, 164281), (169, 126370), (338, 63185), (845, 25274), (1690, 12637)]