21085317

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{373}}^1\times {\mathrm{571}}^1$

素因数の和:961

約数の個数: 24

約数和(自身を含む): 33372768

約数和(自身を除く): 12287451

約数列:

[1, 3, 9, 11, 33, 99, 373, 571, 1119, 1713, 3357, 4103, 5139, 6281, 12309, 18843, 36927, 56529, 212983, 638949, 1916847, 2342813, 7028439, 21085317]

約数ペア:

[(1, 21085317), (3, 7028439), (9, 2342813), (11, 1916847), (33, 638949), (99, 212983), (373, 56529), (571, 36927), (1119, 18843), (1713, 12309), (3357, 6281), (4103, 5139)]