256660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 553896

約数和(自身を除く): 297236

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 313, 410, 626, 820, 1252, 1565, 3130, 6260, 12833, 25666, 51332, 64165, 128330, 256660]

約数ペア:

[(1, 256660), (2, 128330), (4, 64165), (5, 51332), (10, 25666), (20, 12833), (41, 6260), (82, 3130), (164, 1565), (205, 1252), (313, 820), (410, 626)]