19810023121

素因数分解:

$7^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1\times {\mathrm{134257}}^1$

素因数の和:134568

約数の個数: 16

約数和(自身を含む): 22967784576

約数和(自身を除く): 3157761455

約数列:

[1, 7, 107, 197, 749, 1379, 21079, 134257, 147553, 939799, 14365499, 26448629, 100558493, 185140403, 2830003303, 19810023121]

約数ペア:

[(1, 19810023121), (7, 2830003303), (107, 185140403), (197, 100558493), (749, 26448629), (1379, 14365499), (21079, 939799), (134257, 147553)]