20487649

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1511}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4913951

約数列:

[1, 7, 13, 91, 149, 1043, 1511, 1937, 10577, 13559, 19643, 137501, 225139, 1575973, 2926807, 20487649]

約数ペア:

[(1, 20487649), (7, 2926807), (13, 1575973), (91, 225139), (149, 137501), (1043, 19643), (1511, 13559), (1937, 10577)]