21139686

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{22159}}^1$

素因数の和:22220

約数の個数: 24

約数和(自身を含む): 46668960

約数和(自身を除く): 25529274

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 159, 318, 477, 954, 22159, 44318, 66477, 132954, 199431, 398862, 1174427, 2348854, 3523281, 7046562, 10569843, 21139686]

約数ペア:

[(1, 21139686), (2, 10569843), (3, 7046562), (6, 3523281), (9, 2348854), (18, 1174427), (53, 398862), (106, 199431), (159, 132954), (318, 66477), (477, 44318), (954, 22159)]