21711321

素因数分解:

$3^5\times {\mathrm{47}}^1\times {\mathrm{1901}}^1$

素因数の和:1963

約数の個数: 24

約数和(自身を含む): 33231744

約数和(自身を除く): 11520423

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 1269, 1901, 3807, 5703, 11421, 17109, 51327, 89347, 153981, 268041, 461943, 804123, 2412369, 7237107, 21711321]

約数ペア:

[(1, 21711321), (3, 7237107), (9, 2412369), (27, 804123), (47, 461943), (81, 268041), (141, 153981), (243, 89347), (423, 51327), (1269, 17109), (1901, 11421), (3807, 5703)]