12640558

素因数分解:

$2^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1621}}^1$

素因数の和:2187

約数の個数: 16

約数和(自身を含む): 21721824

約数和(自身を除く): 9081266

約数列:

[1, 2, 7, 14, 557, 1114, 1621, 3242, 3899, 7798, 11347, 22694, 902897, 1805794, 6320279, 12640558]

約数ペア:

[(1, 12640558), (2, 6320279), (7, 1805794), (14, 902897), (557, 22694), (1114, 11347), (1621, 7798), (3242, 3899)]