21240385

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{9721}}^1$

素因数の和:9768

約数の個数: 16

約数和(自身を含む): 27999360

約数和(自身を除く): 6758975

約数列:

[1, 5, 19, 23, 95, 115, 437, 2185, 9721, 48605, 184699, 223583, 923495, 1117915, 4248077, 21240385]

約数ペア:

[(1, 21240385), (5, 4248077), (19, 1117915), (23, 923495), (95, 223583), (115, 184699), (437, 48605), (2185, 9721)]