19938645

素因数分解:

$3^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{787}}^1$

素因数の和:1361

約数の個数: 24

約数和(自身を含む): 34665696

約数和(自身を除く): 14727051

約数列:

[1, 3, 5, 9, 15, 45, 563, 787, 1689, 2361, 2815, 3935, 5067, 7083, 8445, 11805, 25335, 35415, 443081, 1329243, 2215405, 3987729, 6646215, 19938645]

約数ペア:

[(1, 19938645), (3, 6646215), (5, 3987729), (9, 2215405), (15, 1329243), (45, 443081), (563, 35415), (787, 25335), (1689, 11805), (2361, 8445), (2815, 7083), (3935, 5067)]