21920346

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:908

約数の個数: 72

約数和(自身を含む): 57220020

約数和(自身を除く): 35299674

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 49, 58, 63, 87, 98, 126, 147, 174, 203, 261, 294, 406, 441, 522, 609, 857, 882, 1218, 1421, 1714, 1827, 2571, 2842, 3654, 4263, 5142, 5999, 7713, 8526, 11998, 12789, 15426, 17997, 24853, 25578, 35994, 41993, 49706, 53991, 74559, 83986, 107982, 125979, 149118, 173971, 223677, 251958, 347942, 377937, 447354, 521913, 755874, 1043826, 1217797, 1565739, 2435594, 3131478, 3653391, 7306782, 10960173, 21920346]

約数ペア:

[(1, 21920346), (2, 10960173), (3, 7306782), (6, 3653391), (7, 3131478), (9, 2435594), (14, 1565739), (18, 1217797), (21, 1043826), (29, 755874), (42, 521913), (49, 447354), (58, 377937), (63, 347942), (87, 251958), (98, 223677), (126, 173971), (147, 149118), (174, 125979), (203, 107982), (261, 83986), (294, 74559), (406, 53991), (441, 49706), (522, 41993), (609, 35994), (857, 25578), (882, 24853), (1218, 17997), (1421, 15426), (1714, 12789), (1827, 11998), (2571, 8526), (2842, 7713), (3654, 5999), (4263, 5142)]