21347821431

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149153}}^1$

素因数の和:149218

約数の個数: 48

約数和(自身を含む): 34746915840

約数和(自身を除く): 13399094409

約数列:

[1, 3, 9, 19, 27, 31, 57, 81, 93, 171, 243, 279, 513, 589, 837, 1539, 1767, 2511, 4617, 5301, 7533, 15903, 47709, 143127, 149153, 447459, 1342377, 2833907, 4027131, 4623743, 8501721, 12081393, 13871229, 25505163, 36244179, 41613687, 76515489, 87851117, 124841061, 229546467, 263553351, 374523183, 688639401, 790660053, 1123569549, 2371980159, 7115940477, 21347821431]

約数ペア:

[(1, 21347821431), (3, 7115940477), (9, 2371980159), (19, 1123569549), (27, 790660053), (31, 688639401), (57, 374523183), (81, 263553351), (93, 229546467), (171, 124841061), (243, 87851117), (279, 76515489), (513, 41613687), (589, 36244179), (837, 25505163), (1539, 13871229), (1767, 12081393), (2511, 8501721), (4617, 4623743), (5301, 4027131), (7533, 2833907), (15903, 1342377), (47709, 447459), (143127, 149153)]