19809994

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{2287}}^1$

素因数の和:2421

約数の個数: 16

約数和(自身を含む): 30640896

約数和(自身を除く): 10830902

約数列:

[1, 2, 61, 71, 122, 142, 2287, 4331, 4574, 8662, 139507, 162377, 279014, 324754, 9904997, 19809994]

約数ペア:

[(1, 19809994), (2, 9904997), (61, 324754), (71, 279014), (122, 162377), (142, 139507), (2287, 8662), (4331, 4574)]