20717090

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29179}}^1$

素因数の和:29257

約数の個数: 16

約数和(自身を含む): 37817280

約数和(自身を除く): 17100190

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29179, 58358, 145895, 291790, 2071709, 4143418, 10358545, 20717090]

約数ペア:

[(1, 20717090), (2, 10358545), (5, 4143418), (10, 2071709), (71, 291790), (142, 145895), (355, 58358), (710, 29179)]