20891415

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15649}}^1$

素因数の和:15746

約数の個数: 16

約数和(自身を含む): 33804000

約数和(自身を除く): 12912585

約数列:

[1, 3, 5, 15, 89, 267, 445, 1335, 15649, 46947, 78245, 234735, 1392761, 4178283, 6963805, 20891415]

約数ペア:

[(1, 20891415), (3, 6963805), (5, 4178283), (15, 1392761), (89, 234735), (267, 78245), (445, 46947), (1335, 15649)]