20686210

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15791}}^1$

素因数の和:15929

約数の個数: 16

約数和(自身を含む): 37521792

約数和(自身を除く): 16835582

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15791, 31582, 78955, 157910, 2068621, 4137242, 10343105, 20686210]

約数ペア:

[(1, 20686210), (2, 10343105), (5, 4137242), (10, 2068621), (131, 157910), (262, 78955), (655, 31582), (1310, 15791)]