21485439

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{16931}}^1$

素因数の和:16987

約数の個数: 16

約数和(自身を含む): 32509440

約数和(自身を除く): 11024001

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 16931, 50793, 152379, 457137, 795757, 2387271, 7161813, 21485439]

約数ペア:

[(1, 21485439), (3, 7161813), (9, 2387271), (27, 795757), (47, 457137), (141, 152379), (423, 50793), (1269, 16931)]