21967569

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{523}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 34332480

約数和(自身を除く): 12364911

約数列:

[1, 3, 9, 13, 39, 117, 359, 523, 1077, 1569, 3231, 4667, 4707, 6799, 14001, 20397, 42003, 61191, 187757, 563271, 1689813, 2440841, 7322523, 21967569]

約数ペア:

[(1, 21967569), (3, 7322523), (9, 2440841), (13, 1689813), (39, 563271), (117, 187757), (359, 61191), (523, 42003), (1077, 20397), (1569, 14001), (3231, 6799), (4667, 4707)]