51787755

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1801}}^1$

素因数の和:1889

約数の個数: 40

約数和(自身を含む): 94194144

約数和(自身を除く): 42406389

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 1065, 1801, 1917, 3195, 5403, 5751, 9005, 9585, 16209, 27015, 28755, 48627, 81045, 127871, 145881, 243135, 383613, 639355, 729405, 1150839, 1918065, 3452517, 5754195, 10357551, 17262585, 51787755]

約数ペア:

[(1, 51787755), (3, 17262585), (5, 10357551), (9, 5754195), (15, 3452517), (27, 1918065), (45, 1150839), (71, 729405), (81, 639355), (135, 383613), (213, 243135), (355, 145881), (405, 127871), (639, 81045), (1065, 48627), (1801, 28755), (1917, 27015), (3195, 16209), (5403, 9585), (5751, 9005)]