21365019

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{60869}}^1$

素因数の和:60891

約数の個数: 16

約数和(自身を含む): 34087200

約数和(自身を除く): 12722181

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 60869, 182607, 547821, 791297, 1643463, 2373891, 7121673, 21365019]

約数ペア:

[(1, 21365019), (3, 7121673), (9, 2373891), (13, 1643463), (27, 791297), (39, 547821), (117, 182607), (351, 60869)]