21216236

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2131}}^1$

素因数の和:2285

約数の個数: 24

約数和(自身を含む): 39399360

約数和(自身を除く): 18183124

約数列:

[1, 2, 4, 19, 38, 76, 131, 262, 524, 2131, 2489, 4262, 4978, 8524, 9956, 40489, 80978, 161956, 279161, 558322, 1116644, 5304059, 10608118, 21216236]

約数ペア:

[(1, 21216236), (2, 10608118), (4, 5304059), (19, 1116644), (38, 558322), (76, 279161), (131, 161956), (262, 80978), (524, 40489), (2131, 9956), (2489, 8524), (4262, 4978)]