21168213

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{389}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 33022080

約数和(自身を除く): 11853867

約数列:

[1, 3, 11, 17, 33, 51, 97, 187, 291, 389, 561, 1067, 1167, 1649, 3201, 4279, 4947, 6613, 12837, 18139, 19839, 37733, 54417, 72743, 113199, 218229, 415063, 641461, 1245189, 1924383, 7056071, 21168213]

約数ペア:

[(1, 21168213), (3, 7056071), (11, 1924383), (17, 1245189), (33, 641461), (51, 415063), (97, 218229), (187, 113199), (291, 72743), (389, 54417), (561, 37733), (1067, 19839), (1167, 18139), (1649, 12837), (3201, 6613), (4279, 4947)]