81726560

素因数分解:

$2^5\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1447}}^1$

素因数の和:1815

約数の個数: 48

約数和(自身を含む): 193759776

約数和(自身を除く): 112033216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 353, 706, 1412, 1447, 1765, 2824, 2894, 3530, 5648, 5788, 7060, 7235, 11296, 11576, 14120, 14470, 23152, 28240, 28940, 46304, 56480, 57880, 115760, 231520, 510791, 1021582, 2043164, 2553955, 4086328, 5107910, 8172656, 10215820, 16345312, 20431640, 40863280, 81726560]

約数ペア:

[(1, 81726560), (2, 40863280), (4, 20431640), (5, 16345312), (8, 10215820), (10, 8172656), (16, 5107910), (20, 4086328), (32, 2553955), (40, 2043164), (80, 1021582), (160, 510791), (353, 231520), (706, 115760), (1412, 57880), (1447, 56480), (1765, 46304), (2824, 28940), (2894, 28240), (3530, 23152), (5648, 14470), (5788, 14120), (7060, 11576), (7235, 11296)]