81564790

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{23371}}^1$

素因数の和:23727

約数の個数: 16

約数和(自身を含む): 147243600

約数和(自身を除く): 65678810

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 23371, 46742, 116855, 233710, 8156479, 16312958, 40782395, 81564790]

約数ペア:

[(1, 81564790), (2, 40782395), (5, 16312958), (10, 8156479), (349, 233710), (698, 116855), (1745, 46742), (3490, 23371)]