20512681

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:504

約数の個数: 16

約数和(自身を含む): 24019200

約数和(自身を除く): 3506519

約数列:

[1, 7, 71, 149, 277, 497, 1043, 1939, 10579, 19667, 41273, 74053, 137669, 288911, 2930383, 20512681]

約数ペア:

[(1, 20512681), (7, 2930383), (71, 288911), (149, 137669), (277, 74053), (497, 41273), (1043, 19667), (1939, 10579)]