81474185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1783}}^1$

素因数の和:1857

約数の個数: 32

約数和(自身を含む): 113890560

約数和(自身を除く): 32416375

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 481, 703, 1235, 1783, 2405, 3515, 8915, 9139, 23179, 33877, 45695, 65971, 115895, 169385, 329855, 440401, 857623, 1253449, 2202005, 4288115, 6267245, 16294837, 81474185]

約数ペア:

[(1, 81474185), (5, 16294837), (13, 6267245), (19, 4288115), (37, 2202005), (65, 1253449), (95, 857623), (185, 440401), (247, 329855), (481, 169385), (703, 115895), (1235, 65971), (1783, 45695), (2405, 33877), (3515, 23179), (8915, 9139)]