81143408

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{1999}}^1$

素因数の和:2109

約数の個数: 40

約数和(自身を含む): 163680000

約数和(自身を除く): 82536592

約数列:

[1, 2, 4, 8, 16, 43, 59, 86, 118, 172, 236, 344, 472, 688, 944, 1999, 2537, 3998, 5074, 7996, 10148, 15992, 20296, 31984, 40592, 85957, 117941, 171914, 235882, 343828, 471764, 687656, 943528, 1375312, 1887056, 5071463, 10142926, 20285852, 40571704, 81143408]

約数ペア:

[(1, 81143408), (2, 40571704), (4, 20285852), (8, 10142926), (16, 5071463), (43, 1887056), (59, 1375312), (86, 943528), (118, 687656), (172, 471764), (236, 343828), (344, 235882), (472, 171914), (688, 117941), (944, 85957), (1999, 40592), (2537, 31984), (3998, 20296), (5074, 15992), (7996, 10148)]