687325340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2643559}}^1$

素因数の和:2643581

約数の個数: 24

約数和(自身を含む): 1554413280

約数和(自身を除く): 867087940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2643559, 5287118, 10574236, 13217795, 26435590, 34366267, 52871180, 68732534, 137465068, 171831335, 343662670, 687325340]

約数ペア:

[(1, 687325340), (2, 343662670), (4, 171831335), (5, 137465068), (10, 68732534), (13, 52871180), (20, 34366267), (26, 26435590), (52, 13217795), (65, 10574236), (130, 5287118), (260, 2643559)]