20285559

素因数分解:

$3^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1$

素因数の和:314

約数の個数: 60

約数和(自身を含む): 37243800

約数和(自身を除く): 16958241

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 81, 133, 147, 171, 189, 269, 399, 441, 513, 567, 807, 931, 1197, 1323, 1539, 1883, 2421, 2793, 3591, 3969, 5111, 5649, 7263, 8379, 10773, 13181, 15333, 16947, 21789, 25137, 35777, 39543, 45999, 50841, 75411, 107331, 118629, 137997, 152523, 250439, 321993, 355887, 413991, 751317, 965979, 1067661, 2253951, 2897937, 6761853, 20285559]

約数ペア:

[(1, 20285559), (3, 6761853), (7, 2897937), (9, 2253951), (19, 1067661), (21, 965979), (27, 751317), (49, 413991), (57, 355887), (63, 321993), (81, 250439), (133, 152523), (147, 137997), (171, 118629), (189, 107331), (269, 75411), (399, 50841), (441, 45999), (513, 39543), (567, 35777), (807, 25137), (931, 21789), (1197, 16947), (1323, 15333), (1539, 13181), (1883, 10773), (2421, 8379), (2793, 7263), (3591, 5649), (3969, 5111)]