19967065

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{283}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 24455808

約数和(自身を除く): 4488743

約数列:

[1, 5, 103, 137, 283, 515, 685, 1415, 14111, 29149, 38771, 70555, 145745, 193855, 3993413, 19967065]

約数ペア:

[(1, 19967065), (5, 3993413), (103, 193855), (137, 145745), (283, 70555), (515, 38771), (685, 29149), (1415, 14111)]