19450405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6959}}^1$

素因数の和:7020

約数の個数: 16

約数和(自身を含む): 25724160

約数和(自身を除く): 6273755

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 6959, 34795, 90467, 299237, 452335, 1496185, 3890081, 19450405]

約数ペア:

[(1, 19450405), (5, 3890081), (13, 1496185), (43, 452335), (65, 299237), (215, 90467), (559, 34795), (2795, 6959)]