18763857

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6337}}^1$

素因数の和:6397

約数の個数: 24

約数和(自身を含む): 31639296

約数和(自身を除く): 12875439

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6337, 19011, 44359, 57033, 133077, 297839, 399231, 893517, 2084873, 2680551, 6254619, 18763857]

約数ペア:

[(1, 18763857), (3, 6254619), (7, 2680551), (9, 2084873), (21, 893517), (47, 399231), (63, 297839), (141, 133077), (329, 57033), (423, 44359), (987, 19011), (2961, 6337)]