21893347

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 32

約数和(自身を含む): 27648000

約数和(自身を除く): 5754653

約数列:

[1, 7, 29, 31, 49, 71, 203, 217, 343, 497, 899, 1421, 1519, 2059, 2201, 3479, 6293, 9947, 10633, 14413, 15407, 24353, 44051, 63829, 100891, 107849, 308357, 446803, 706237, 754943, 3127621, 21893347]

約数ペア:

[(1, 21893347), (7, 3127621), (29, 754943), (31, 706237), (49, 446803), (71, 308357), (203, 107849), (217, 100891), (343, 63829), (497, 44051), (899, 24353), (1421, 15407), (1519, 14413), (2059, 10633), (2201, 9947), (3479, 6293)]