648425565560

素因数分解:

$2^3\times 5^1\times {\mathrm{16210639139}}^1$

素因数の和:16210639150

約数の個数: 16

約数和(自身を含む): 1458957522600

約数和(自身を除く): 810531957040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16210639139, 32421278278, 64842556556, 81053195695, 129685113112, 162106391390, 324212782780, 648425565560]

約数ペア:

[(1, 648425565560), (2, 324212782780), (4, 162106391390), (5, 129685113112), (8, 81053195695), (10, 64842556556), (20, 32421278278), (40, 16210639139)]