18709159

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:510

約数の個数: 16

約数和(自身を含む): 21980160

約数和(自身を除く): 3271001

約数列:

[1, 7, 53, 211, 239, 371, 1477, 1673, 11183, 12667, 50429, 78281, 88669, 353003, 2672737, 18709159]

約数ペア:

[(1, 18709159), (7, 2672737), (53, 353003), (211, 88669), (239, 78281), (371, 50429), (1477, 12667), (1673, 11183)]