399968930

素因数分解:

$2^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{61819}}^1$

素因数の和:62473

約数の個数: 16

約数和(自身を含む): 721068480

約数和(自身を除く): 321099550

約数列:

[1, 2, 5, 10, 647, 1294, 3235, 6470, 61819, 123638, 309095, 618190, 39996893, 79993786, 199984465, 399968930]

約数ペア:

[(1, 399968930), (2, 199984465), (5, 79993786), (10, 39996893), (647, 618190), (1294, 309095), (3235, 123638), (6470, 61819)]