20238220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12809}}^1$

素因数の和:12897

約数の個数: 24

約数和(自身を含む): 43041600

約数和(自身を除く): 22803380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12809, 25618, 51236, 64045, 128090, 256180, 1011911, 2023822, 4047644, 5059555, 10119110, 20238220]

約数ペア:

[(1, 20238220), (2, 10119110), (4, 5059555), (5, 4047644), (10, 2023822), (20, 1011911), (79, 256180), (158, 128090), (316, 64045), (395, 51236), (790, 25618), (1580, 12809)]