639745914

素因数分解:

$2^1\times 3^1\times {\mathrm{5471}}^1\times {\mathrm{19489}}^1$

素因数の和:24965

約数の個数: 16

約数和(自身を含む): 1279791360

約数和(自身を除く): 640045446

約数列:

[1, 2, 3, 6, 5471, 10942, 16413, 19489, 32826, 38978, 58467, 116934, 106624319, 213248638, 319872957, 639745914]

約数ペア:

[(1, 639745914), (2, 319872957), (3, 213248638), (6, 106624319), (5471, 116934), (10942, 58467), (16413, 38978), (19489, 32826)]