21710997

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^2$

素因数の和:148

約数の個数: 60

約数和(自身を含む): 41132256

約数和(自身を除く): 19421259

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 59, 63, 77, 81, 99, 177, 189, 231, 297, 413, 531, 567, 649, 693, 891, 1239, 1593, 1947, 2079, 3481, 3717, 4543, 4779, 5841, 6237, 10443, 11151, 13629, 17523, 24367, 31329, 33453, 38291, 40887, 52569, 73101, 93987, 114873, 122661, 219303, 268037, 281961, 344619, 367983, 657909, 804111, 1033857, 1973727, 2412333, 3101571, 7236999, 21710997]

約数ペア:

[(1, 21710997), (3, 7236999), (7, 3101571), (9, 2412333), (11, 1973727), (21, 1033857), (27, 804111), (33, 657909), (59, 367983), (63, 344619), (77, 281961), (81, 268037), (99, 219303), (177, 122661), (189, 114873), (231, 93987), (297, 73101), (413, 52569), (531, 40887), (567, 38291), (649, 33453), (693, 31329), (891, 24367), (1239, 17523), (1593, 13629), (1947, 11151), (2079, 10443), (3481, 6237), (3717, 5841), (4543, 4779)]