21718539

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1187}}^1$

素因数の和:1319

約数の個数: 24

約数和(自身を含む): 33359040

約数和(自身を除く): 11640501

約数列:

[1, 3, 9, 19, 57, 107, 171, 321, 963, 1187, 2033, 3561, 6099, 10683, 18297, 22553, 67659, 127009, 202977, 381027, 1143081, 2413171, 7239513, 21718539]

約数ペア:

[(1, 21718539), (3, 7239513), (9, 2413171), (19, 1143081), (57, 381027), (107, 202977), (171, 127009), (321, 67659), (963, 22553), (1187, 18297), (2033, 10683), (3561, 6099)]