28381340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109159}}^1$

素因数の和:109181

約数の個数: 24

約数和(自身を含む): 64186080

約数和(自身を除く): 35804740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109159, 218318, 436636, 545795, 1091590, 1419067, 2183180, 2838134, 5676268, 7095335, 14190670, 28381340]

約数ペア:

[(1, 28381340), (2, 14190670), (4, 7095335), (5, 5676268), (10, 2838134), (13, 2183180), (20, 1419067), (26, 1091590), (52, 545795), (65, 436636), (130, 218318), (260, 109159)]