13889375

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:404

約数の個数: 20

約数和(自身を含む): 17656848

約数和(自身を除く): 3767473

約数列:

[1, 5, 25, 71, 125, 313, 355, 625, 1565, 1775, 7825, 8875, 22223, 39125, 44375, 111115, 195625, 555575, 2777875, 13889375]

約数ペア:

[(1, 13889375), (5, 2777875), (25, 555575), (71, 195625), (125, 111115), (313, 44375), (355, 39125), (625, 22223), (1565, 8875), (1775, 7825)]