21686115

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131431}}^1$

素因数の和:131450

約数の個数: 16

約数和(自身を含む): 37852416

約数和(自身を除く): 16166301

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 131431, 394293, 657155, 1445741, 1971465, 4337223, 7228705, 21686115]

約数ペア:

[(1, 21686115), (3, 7228705), (5, 4337223), (11, 1971465), (15, 1445741), (33, 657155), (55, 394293), (165, 131431)]