639861509

素因数分解:

$7^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1\times {\mathrm{3307}}^1$

素因数の和:3656

約数の個数: 16

約数和(自身を含む): 740568576

約数和(自身を除く): 100707067

約数列:

[1, 7, 131, 211, 917, 1477, 3307, 23149, 27641, 193487, 433217, 697777, 3032519, 4884439, 91408787, 639861509]

約数ペア:

[(1, 639861509), (7, 91408787), (131, 4884439), (211, 3032519), (917, 697777), (1477, 433217), (3307, 193487), (23149, 27641)]