20281975

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5039}}^1$

素因数の和:5079

約数の個数: 24

約数和(自身を含む): 29998080

約数和(自身を除く): 9716105

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5039, 25195, 35273, 115897, 125975, 176365, 579485, 811279, 881825, 2897425, 4056395, 20281975]

約数ペア:

[(1, 20281975), (5, 4056395), (7, 2897425), (23, 881825), (25, 811279), (35, 579485), (115, 176365), (161, 125975), (175, 115897), (575, 35273), (805, 25195), (4025, 5039)]