399645772

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{276763}}^1$

素因数の和:276805

約数の個数: 18

約数和(自身を含む): 738129588

約数和(自身を除く): 338483816

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 276763, 553526, 1107052, 5258497, 10516994, 21033988, 99911443, 199822886, 399645772]

約数ペア:

[(1, 399645772), (2, 199822886), (4, 99911443), (19, 21033988), (38, 10516994), (76, 5258497), (361, 1107052), (722, 553526), (1444, 276763)]