21988161

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8171}}^1$

素因数の和:8213

約数の個数: 24

約数和(自身を含む): 35695296

約数和(自身を除く): 13707135

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 8171, 24513, 73539, 106223, 187933, 318669, 563799, 956007, 1691397, 2443129, 7329387, 21988161]

約数ペア:

[(1, 21988161), (3, 7329387), (9, 2443129), (13, 1691397), (23, 956007), (39, 563799), (69, 318669), (117, 187933), (207, 106223), (299, 73539), (897, 24513), (2691, 8171)]