19257777

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 36403200

約数和(自身を除く): 17145423

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 59, 63, 77, 99, 157, 177, 189, 231, 297, 413, 471, 531, 649, 693, 1099, 1239, 1413, 1593, 1727, 1947, 2079, 3297, 3717, 4239, 4543, 5181, 5841, 9263, 9891, 11151, 12089, 13629, 15543, 17523, 27789, 29673, 36267, 40887, 46629, 64841, 83367, 101893, 108801, 122661, 194523, 250101, 305679, 326403, 583569, 713251, 917037, 1750707, 2139753, 2751111, 6419259, 19257777]

約数ペア:

[(1, 19257777), (3, 6419259), (7, 2751111), (9, 2139753), (11, 1750707), (21, 917037), (27, 713251), (33, 583569), (59, 326403), (63, 305679), (77, 250101), (99, 194523), (157, 122661), (177, 108801), (189, 101893), (231, 83367), (297, 64841), (413, 46629), (471, 40887), (531, 36267), (649, 29673), (693, 27789), (1099, 17523), (1239, 15543), (1413, 13629), (1593, 12089), (1727, 11151), (1947, 9891), (2079, 9263), (3297, 5841), (3717, 5181), (4239, 4543)]