639865295

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{123407}}^1$

素因数の和:123490

約数の個数: 16

約数和(自身を含む): 826339968

約数和(自身を除く): 186474673

約数列:

[1, 5, 17, 61, 85, 305, 1037, 5185, 123407, 617035, 2097919, 7527827, 10489595, 37639135, 127973059, 639865295]

約数ペア:

[(1, 639865295), (5, 127973059), (17, 37639135), (61, 10489595), (85, 7527827), (305, 2097919), (1037, 617035), (5185, 123407)]