7973217

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6661}}^1$

素因数の和:6693

約数の個数: 24

約数和(自身を含む): 13856960

約数和(自身を除く): 5883743

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 6661, 19983, 46627, 59949, 126559, 139881, 379677, 419643, 885913, 1139031, 2657739, 7973217]

約数ペア:

[(1, 7973217), (3, 2657739), (7, 1139031), (9, 885913), (19, 419643), (21, 379677), (57, 139881), (63, 126559), (133, 59949), (171, 46627), (399, 19983), (1197, 6661)]