21400048

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{8009}}^1$

素因数の和:8184

約数の個数: 20

約数和(自身を含む): 41716080

約数和(自身を除く): 20316032

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 8009, 16018, 32036, 64072, 128144, 1337503, 2675006, 5350012, 10700024, 21400048]

約数ペア:

[(1, 21400048), (2, 10700024), (4, 5350012), (8, 2675006), (16, 1337503), (167, 128144), (334, 64072), (668, 32036), (1336, 16018), (2672, 8009)]