21847287

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 37756800

約数和(自身を除く): 15909513

約数列:

[1, 3, 7, 11, 21, 33, 49, 59, 77, 147, 177, 229, 231, 413, 539, 649, 687, 1239, 1603, 1617, 1947, 2519, 2891, 4543, 4809, 7557, 8673, 11221, 13511, 13629, 17633, 31801, 33663, 40533, 52899, 94577, 95403, 123431, 148621, 283731, 370293, 445863, 662039, 1040347, 1986117, 3121041, 7282429, 21847287]

約数ペア:

[(1, 21847287), (3, 7282429), (7, 3121041), (11, 1986117), (21, 1040347), (33, 662039), (49, 445863), (59, 370293), (77, 283731), (147, 148621), (177, 123431), (229, 95403), (231, 94577), (413, 52899), (539, 40533), (649, 33663), (687, 31801), (1239, 17633), (1603, 13629), (1617, 13511), (1947, 11221), (2519, 8673), (2891, 7557), (4543, 4809)]