256628421

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{797}}^1$

素因数の和:1098

約数の個数: 48

約数和(自身を含む): 448156800

約数和(自身を除く): 191528379

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 269, 399, 797, 807, 1197, 1883, 2391, 2421, 5111, 5579, 5649, 7173, 15143, 15333, 16737, 16947, 35777, 45429, 45999, 50211, 106001, 107331, 136287, 214393, 318003, 321993, 643179, 954009, 1500751, 1929537, 4073467, 4502253, 12220401, 13506759, 28514269, 36661203, 85542807, 256628421]

約数ペア:

[(1, 256628421), (3, 85542807), (7, 36661203), (9, 28514269), (19, 13506759), (21, 12220401), (57, 4502253), (63, 4073467), (133, 1929537), (171, 1500751), (269, 954009), (399, 643179), (797, 321993), (807, 318003), (1197, 214393), (1883, 136287), (2391, 107331), (2421, 106001), (5111, 50211), (5579, 45999), (5649, 45429), (7173, 35777), (15143, 16947), (15333, 16737)]