21147063

素因数分解:

$3^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{2657}}^1$

素因数の和:3046

約数の個数: 16

約数和(自身を含む): 32321280

約数和(自身を除く): 11174217

約数列:

[1, 3, 7, 21, 379, 1137, 2653, 2657, 7959, 7971, 18599, 55797, 1007003, 3021009, 7049021, 21147063]

約数ペア:

[(1, 21147063), (3, 7049021), (7, 3021009), (21, 1007003), (379, 55797), (1137, 18599), (2653, 7971), (2657, 7959)]