20514260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78901}}^1$

素因数の和:78923

約数の個数: 24

約数和(自身を含む): 46394376

約数和(自身を除く): 25880116

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78901, 157802, 315604, 394505, 789010, 1025713, 1578020, 2051426, 4102852, 5128565, 10257130, 20514260]

約数ペア:

[(1, 20514260), (2, 10257130), (4, 5128565), (5, 4102852), (10, 2051426), (13, 1578020), (20, 1025713), (26, 789010), (52, 394505), (65, 315604), (130, 157802), (260, 78901)]