20274020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77977}}^1$

素因数の和:77999

約数の個数: 24

約数和(自身を含む): 45851064

約数和(自身を除く): 25577044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77977, 155954, 311908, 389885, 779770, 1013701, 1559540, 2027402, 4054804, 5068505, 10137010, 20274020]

約数ペア:

[(1, 20274020), (2, 10137010), (4, 5068505), (5, 4054804), (10, 2027402), (13, 1559540), (20, 1013701), (26, 779770), (52, 389885), (65, 311908), (130, 155954), (260, 77977)]