686993320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1321141}}^1$

素因数の和:1321165

約数の個数: 32

約数和(自身を含む): 1664638920

約数和(自身を除く): 977645600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1321141, 2642282, 5284564, 6605705, 10569128, 13211410, 17174833, 26422820, 34349666, 52845640, 68699332, 85874165, 137398664, 171748330, 343496660, 686993320]

約数ペア:

[(1, 686993320), (2, 343496660), (4, 171748330), (5, 137398664), (8, 85874165), (10, 68699332), (13, 52845640), (20, 34349666), (26, 26422820), (40, 17174833), (52, 13211410), (65, 10569128), (104, 6605705), (130, 5284564), (260, 2642282), (520, 1321141)]