21660947

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7603}}^1$

素因数の和:7658

約数の個数: 16

約数和(自身を含む): 27739392

約数和(自身を除く): 6078445

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7603, 53221, 83633, 281311, 585431, 1969177, 3094421, 21660947]

約数ペア:

[(1, 21660947), (7, 3094421), (11, 1969177), (37, 585431), (77, 281311), (259, 83633), (407, 53221), (2849, 7603)]