18321681

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{977}}^1$

素因数の和:1053

約数の個数: 32

約数和(自身を含む): 30044160

約数和(自身を除く): 11722479

約数列:

[1, 3, 7, 19, 21, 47, 57, 133, 141, 329, 399, 893, 977, 987, 2679, 2931, 6251, 6839, 18563, 18753, 20517, 45919, 55689, 129941, 137757, 321433, 389823, 872461, 964299, 2617383, 6107227, 18321681]

約数ペア:

[(1, 18321681), (3, 6107227), (7, 2617383), (19, 964299), (21, 872461), (47, 389823), (57, 321433), (133, 137757), (141, 129941), (329, 55689), (399, 45919), (893, 20517), (977, 18753), (987, 18563), (2679, 6839), (2931, 6251)]