21082978

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{179}}^2$

素因数の和:414

約数の個数: 24

約数和(自身を含む): 37118592

約数和(自身を除く): 16035614

約数列:

[1, 2, 7, 14, 47, 94, 179, 329, 358, 658, 1253, 2506, 8413, 16826, 32041, 58891, 64082, 117782, 224287, 448574, 1505927, 3011854, 10541489, 21082978]

約数ペア:

[(1, 21082978), (2, 10541489), (7, 3011854), (14, 1505927), (47, 448574), (94, 224287), (179, 117782), (329, 64082), (358, 58891), (658, 32041), (1253, 16826), (2506, 8413)]