639398431

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{13619}}^1$

素因数の和:13998

約数の個数: 16

約数和(自身を含む): 771436800

約数和(自身を除く): 132038369

約数列:

[1, 7, 19, 133, 353, 2471, 6707, 13619, 46949, 95333, 258761, 1811327, 4807507, 33652549, 91342633, 639398431]

約数ペア:

[(1, 639398431), (7, 91342633), (19, 33652549), (133, 4807507), (353, 1811327), (2471, 258761), (6707, 95333), (13619, 46949)]