21734890

素因数分解:

$2^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4951}}^1$

素因数の和:5397

約数の個数: 16

約数和(自身を含む): 39219840

約数和(自身を除く): 17484950

約数列:

[1, 2, 5, 10, 439, 878, 2195, 4390, 4951, 9902, 24755, 49510, 2173489, 4346978, 10867445, 21734890]

約数ペア:

[(1, 21734890), (2, 10867445), (5, 4346978), (10, 2173489), (439, 49510), (878, 24755), (2195, 9902), (4390, 4951)]