20720185

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{2383}}^1$

素因数の和:2472

約数の個数: 16

約数和(自身を含む): 26090496

約数和(自身を除く): 5370311

約数列:

[1, 5, 37, 47, 185, 235, 1739, 2383, 8695, 11915, 88171, 112001, 440855, 560005, 4144037, 20720185]

約数ペア:

[(1, 20720185), (5, 4144037), (37, 560005), (47, 440855), (185, 112001), (235, 88171), (1739, 11915), (2383, 8695)]