28178670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72253}}^1$

素因数の和:72276

約数の個数: 32

約数和(自身を含む): 72832032

約数和(自身を除く): 44653362

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 72253, 144506, 216759, 361265, 433518, 722530, 939289, 1083795, 1878578, 2167590, 2817867, 4696445, 5635734, 9392890, 14089335, 28178670]

約数ペア:

[(1, 28178670), (2, 14089335), (3, 9392890), (5, 5635734), (6, 4696445), (10, 2817867), (13, 2167590), (15, 1878578), (26, 1083795), (30, 939289), (39, 722530), (65, 433518), (78, 361265), (130, 216759), (195, 144506), (390, 72253)]