20998190

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1039}}^1$

素因数の和:1136

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 18538450

約数列:

[1, 2, 5, 10, 43, 47, 86, 94, 215, 235, 430, 470, 1039, 2021, 2078, 4042, 5195, 10105, 10390, 20210, 44677, 48833, 89354, 97666, 223385, 244165, 446770, 488330, 2099819, 4199638, 10499095, 20998190]

約数ペア:

[(1, 20998190), (2, 10499095), (5, 4199638), (10, 2099819), (43, 488330), (47, 446770), (86, 244165), (94, 223385), (215, 97666), (235, 89354), (430, 48833), (470, 44677), (1039, 20210), (2021, 10390), (2078, 10105), (4042, 5195)]