21980349

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{17321}}^1$

素因数の和:17377

約数の個数: 16

約数和(自身を含む): 33258240

約数和(自身を除く): 11277891

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 17321, 51963, 155889, 467667, 814087, 2442261, 7326783, 21980349]

約数ペア:

[(1, 21980349), (3, 7326783), (9, 2442261), (27, 814087), (47, 467667), (141, 155889), (423, 51963), (1269, 17321)]