256425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 458304

約数和(自身を除く): 201879

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 263, 325, 789, 975, 1315, 3419, 3945, 6575, 10257, 17095, 19725, 51285, 85475, 256425]

約数ペア:

[(1, 256425), (3, 85475), (5, 51285), (13, 19725), (15, 17095), (25, 10257), (39, 6575), (65, 3945), (75, 3419), (195, 1315), (263, 975), (325, 789)]