20997926

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:396

約数の個数: 24

約数和(自身を含む): 33649920

約数和(自身を除く): 12651994

約数列:

[1, 2, 19, 38, 127, 229, 254, 361, 458, 722, 2413, 4351, 4826, 8702, 29083, 45847, 58166, 82669, 91694, 165338, 552577, 1105154, 10498963, 20997926]

約数ペア:

[(1, 20997926), (2, 10498963), (19, 1105154), (38, 552577), (127, 165338), (229, 91694), (254, 82669), (361, 58166), (458, 45847), (722, 29083), (2413, 8702), (4351, 4826)]