20951710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161167}}^1$

素因数の和:161187

約数の個数: 16

約数和(自身を含む): 40614336

約数和(自身を除く): 19662626

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161167, 322334, 805835, 1611670, 2095171, 4190342, 10475855, 20951710]

約数ペア:

[(1, 20951710), (2, 10475855), (5, 4190342), (10, 2095171), (13, 1611670), (26, 805835), (65, 322334), (130, 161167)]