16620680

素因数分解:

$2^3\times 5^1\times {\mathrm{415517}}^1$

素因数の和:415528

約数の個数: 16

約数和(自身を含む): 37396620

約数和(自身を除く): 20775940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 415517, 831034, 1662068, 2077585, 3324136, 4155170, 8310340, 16620680]

約数ペア:

[(1, 16620680), (2, 8310340), (4, 4155170), (5, 3324136), (8, 2077585), (10, 1662068), (20, 831034), (40, 415517)]