21210195

素因数分解:

$3^1\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1559}}^1$

素因数の和:2474

約数の個数: 16

約数和(自身を含む): 33995520

約数和(自身を除く): 12785325

約数列:

[1, 3, 5, 15, 907, 1559, 2721, 4535, 4677, 7795, 13605, 23385, 1414013, 4242039, 7070065, 21210195]

約数ペア:

[(1, 21210195), (3, 7070065), (5, 4242039), (15, 1414013), (907, 23385), (1559, 13605), (2721, 7795), (4535, 4677)]