1311321320

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{489299}}^1$

素因数の和:489377

約数の個数: 32

約数和(自身を含む): 2994516000

約数和(自身を除く): 1683194680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 489299, 978598, 1957196, 2446495, 3914392, 4892990, 9785980, 19571960, 32783033, 65566066, 131132132, 163915165, 262264264, 327830330, 655660660, 1311321320]

約数ペア:

[(1, 1311321320), (2, 655660660), (4, 327830330), (5, 262264264), (8, 163915165), (10, 131132132), (20, 65566066), (40, 32783033), (67, 19571960), (134, 9785980), (268, 4892990), (335, 3914392), (536, 2446495), (670, 1957196), (1340, 978598), (2680, 489299)]