21720408

素因数分解:

$2^3\times 3^1\times {\mathrm{113}}^1\times {\mathrm{8009}}^1$

素因数の和:8131

約数の個数: 32

約数和(自身を含む): 54788400

約数和(自身を除く): 33067992

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 113, 226, 339, 452, 678, 904, 1356, 2712, 8009, 16018, 24027, 32036, 48054, 64072, 96108, 192216, 905017, 1810034, 2715051, 3620068, 5430102, 7240136, 10860204, 21720408]

約数ペア:

[(1, 21720408), (2, 10860204), (3, 7240136), (4, 5430102), (6, 3620068), (8, 2715051), (12, 1810034), (24, 905017), (113, 192216), (226, 96108), (339, 64072), (452, 48054), (678, 32036), (904, 24027), (1356, 16018), (2712, 8009)]