18563973

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 26995200

約数和(自身を除く): 8431227

約数列:

[1, 3, 29, 37, 73, 79, 87, 111, 219, 237, 1073, 2117, 2291, 2701, 2923, 3219, 5767, 6351, 6873, 8103, 8769, 17301, 78329, 84767, 167243, 213379, 234987, 254301, 501729, 640137, 6187991, 18563973]

約数ペア:

[(1, 18563973), (3, 6187991), (29, 640137), (37, 501729), (73, 254301), (79, 234987), (87, 213379), (111, 167243), (219, 84767), (237, 78329), (1073, 17301), (2117, 8769), (2291, 8103), (2701, 6873), (2923, 6351), (3219, 5767)]