19922991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{26249}}^1$

素因数の和:26286

約数の個数: 16

約数和(自身を含む): 30240000

約数和(自身を除く): 10317009

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 26249, 78747, 288739, 603727, 866217, 1811181, 6640997, 19922991]

約数ペア:

[(1, 19922991), (3, 6640997), (11, 1811181), (23, 866217), (33, 603727), (69, 288739), (253, 78747), (759, 26249)]