20687667

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^2$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 37486848

約数和(自身を除く): 16799181

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 83, 91, 143, 231, 249, 273, 429, 581, 913, 1001, 1079, 1743, 2739, 3003, 3237, 6391, 6889, 7553, 11869, 19173, 20667, 22659, 35607, 48223, 75779, 83083, 89557, 144669, 227337, 249249, 268671, 530453, 626899, 985127, 1591359, 1880697, 2955381, 6895889, 20687667]

約数ペア:

[(1, 20687667), (3, 6895889), (7, 2955381), (11, 1880697), (13, 1591359), (21, 985127), (33, 626899), (39, 530453), (77, 268671), (83, 249249), (91, 227337), (143, 144669), (231, 89557), (249, 83083), (273, 75779), (429, 48223), (581, 35607), (913, 22659), (1001, 20667), (1079, 19173), (1743, 11869), (2739, 7553), (3003, 6889), (3237, 6391)]