399467042

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{289889}}^1$

素因数の和:289957

約数の個数: 16

約数和(自身を含む): 657470520

約数和(自身を除く): 258003478

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 289889, 579778, 3768557, 7537114, 15364117, 30728234, 199733521, 399467042]

約数ペア:

[(1, 399467042), (2, 199733521), (13, 30728234), (26, 15364117), (53, 7537114), (106, 3768557), (689, 579778), (1378, 289889)]