31451320

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{10771}}^1$

素因数の和:10855

約数の個数: 32

約数和(自身を含む): 71741520

約数和(自身を除く): 40290200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 10771, 21542, 43084, 53855, 86168, 107710, 215420, 430840, 786283, 1572566, 3145132, 3931415, 6290264, 7862830, 15725660, 31451320]

約数ペア:

[(1, 31451320), (2, 15725660), (4, 7862830), (5, 6290264), (8, 3931415), (10, 3145132), (20, 1572566), (40, 786283), (73, 430840), (146, 215420), (292, 107710), (365, 86168), (584, 53855), (730, 43084), (1460, 21542), (2920, 10771)]