28478810

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{40111}}^1$

素因数の和:40189

約数の個数: 16

約数和(自身を含む): 51985152

約数和(自身を除く): 23506342

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 40111, 80222, 200555, 401110, 2847881, 5695762, 14239405, 28478810]

約数ペア:

[(1, 28478810), (2, 14239405), (5, 5695762), (10, 2847881), (71, 401110), (142, 200555), (355, 80222), (710, 40111)]