19967615

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 24706080

約数和(自身を除く): 4738465

約数列:

[1, 5, 41, 205, 257, 379, 1285, 1895, 10537, 15539, 52685, 77695, 97403, 487015, 3993523, 19967615]

約数ペア:

[(1, 19967615), (5, 3993523), (41, 487015), (205, 97403), (257, 77695), (379, 52685), (1285, 15539), (1895, 10537)]