28005380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107713}}^1$

素因数の和:107735

約数の個数: 24

約数和(自身を含む): 63335832

約数和(自身を除く): 35330452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 107713, 215426, 430852, 538565, 1077130, 1400269, 2154260, 2800538, 5601076, 7001345, 14002690, 28005380]

約数ペア:

[(1, 28005380), (2, 14002690), (4, 7001345), (5, 5601076), (10, 2800538), (13, 2154260), (20, 1400269), (26, 1077130), (52, 538565), (65, 430852), (130, 215426), (260, 107713)]