129761320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249541}}^1$

素因数の和:249565

約数の個数: 32

約数和(自身を含む): 314422920

約数和(自身を除く): 184661600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 249541, 499082, 998164, 1247705, 1996328, 2495410, 3244033, 4990820, 6488066, 9981640, 12976132, 16220165, 25952264, 32440330, 64880660, 129761320]

約数ペア:

[(1, 129761320), (2, 64880660), (4, 32440330), (5, 25952264), (8, 16220165), (10, 12976132), (13, 9981640), (20, 6488066), (26, 4990820), (40, 3244033), (52, 2495410), (65, 1996328), (104, 1247705), (130, 998164), (260, 499082), (520, 249541)]