21489057

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13963}}^1$

素因数の和:13994

約数の個数: 20

約数和(自身を含む): 33792880

約数和(自身を除く): 12303823

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13963, 41889, 125667, 265297, 377001, 795891, 1131003, 2387673, 7163019, 21489057]

約数ペア:

[(1, 21489057), (3, 7163019), (9, 2387673), (19, 1131003), (27, 795891), (57, 377001), (81, 265297), (171, 125667), (513, 41889), (1539, 13963)]