21956319

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 19515681

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 59, 63, 77, 99, 177, 179, 189, 231, 297, 413, 531, 537, 649, 693, 1239, 1253, 1593, 1611, 1947, 1969, 2079, 3717, 3759, 4543, 4833, 5841, 5907, 10561, 11151, 11277, 13629, 13783, 17523, 17721, 31683, 33831, 40887, 41349, 53163, 73927, 95049, 116171, 122661, 124047, 221781, 285147, 348513, 372141, 665343, 813197, 1045539, 1996029, 2439591, 3136617, 7318773, 21956319]

約数ペア:

[(1, 21956319), (3, 7318773), (7, 3136617), (9, 2439591), (11, 1996029), (21, 1045539), (27, 813197), (33, 665343), (59, 372141), (63, 348513), (77, 285147), (99, 221781), (177, 124047), (179, 122661), (189, 116171), (231, 95049), (297, 73927), (413, 53163), (531, 41349), (537, 40887), (649, 33831), (693, 31683), (1239, 17721), (1253, 17523), (1593, 13783), (1611, 13629), (1947, 11277), (1969, 11151), (2079, 10561), (3717, 5907), (3759, 5841), (4543, 4833)]