21721085

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{9941}}^1$

素因数の和:9988

約数の個数: 16

約数和(自身を含む): 28632960

約数和(自身を除く): 6911875

約数列:

[1, 5, 19, 23, 95, 115, 437, 2185, 9941, 49705, 188879, 228643, 944395, 1143215, 4344217, 21721085]

約数ペア:

[(1, 21721085), (5, 4344217), (19, 1143215), (23, 944395), (95, 228643), (115, 188879), (437, 49705), (2185, 9941)]