1289421

素因数分解:

$3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 2160704

約数和(自身を除く): 871283

約数列:

[1, 3, 7, 9, 21, 63, 97, 211, 291, 633, 679, 873, 1477, 1899, 2037, 4431, 6111, 13293, 20467, 61401, 143269, 184203, 429807, 1289421]

約数ペア:

[(1, 1289421), (3, 429807), (7, 184203), (9, 143269), (21, 61401), (63, 20467), (97, 13293), (211, 6111), (291, 4431), (633, 2037), (679, 1899), (873, 1477)]