221648781

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1\times {\mathrm{4079}}^1$

素因数の和:4448

約数の個数: 16

約数和(自身を含む): 301593600

約数和(自身を除く): 79944819

約数列:

[1, 3, 59, 177, 307, 921, 4079, 12237, 18113, 54339, 240661, 721983, 1252253, 3756759, 73882927, 221648781]

約数ペア:

[(1, 221648781), (3, 73882927), (59, 3756759), (177, 1252253), (307, 721983), (921, 240661), (4079, 54339), (12237, 18113)]