21162465

素因数分解:

$3^4\times 5^1\times {\mathrm{52253}}^1$

素因数の和:52270

約数の個数: 20

約数和(自身を含む): 37936404

約数和(自身を除く): 16773939

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52253, 156759, 261265, 470277, 783795, 1410831, 2351385, 4232493, 7054155, 21162465]

約数ペア:

[(1, 21162465), (3, 7054155), (5, 4232493), (9, 2351385), (15, 1410831), (27, 783795), (45, 470277), (81, 261265), (135, 156759), (405, 52253)]