28961947

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 35637216

約数和(自身を除く): 6675269

約数列:

[1, 7, 19, 73, 133, 157, 361, 511, 1099, 1387, 2527, 2983, 9709, 11461, 20881, 26353, 56677, 80227, 184471, 217759, 396739, 1524313, 4137421, 28961947]

約数ペア:

[(1, 28961947), (7, 4137421), (19, 1524313), (73, 396739), (133, 217759), (157, 184471), (361, 80227), (511, 56677), (1099, 26353), (1387, 20881), (2527, 11461), (2983, 9709)]