20821425

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{3803}}^1$

素因数の和:3889

約数の個数: 24

約数和(自身を含む): 34905504

約数和(自身を除く): 14084079

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 3803, 5475, 11409, 19015, 57045, 95075, 277619, 285225, 832857, 1388095, 4164285, 6940475, 20821425]

約数ペア:

[(1, 20821425), (3, 6940475), (5, 4164285), (15, 1388095), (25, 832857), (73, 285225), (75, 277619), (219, 95075), (365, 57045), (1095, 19015), (1825, 11409), (3803, 5475)]