21901797

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{557}}^1$

素因数の和:837

約数の個数: 24

約数和(自身を含む): 33687576

約数和(自身を除く): 11785779

約数列:

[1, 3, 9, 17, 51, 153, 257, 557, 771, 1671, 2313, 4369, 5013, 9469, 13107, 28407, 39321, 85221, 143149, 429447, 1288341, 2433533, 7300599, 21901797]

約数ペア:

[(1, 21901797), (3, 7300599), (9, 2433533), (17, 1288341), (51, 429447), (153, 143149), (257, 85221), (557, 39321), (771, 28407), (1671, 13107), (2313, 9469), (4369, 5013)]