20128425

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{15787}}^1$

素因数の和:15817

約数の個数: 24

約数和(自身を含む): 35238816

約数和(自身を除く): 15110391

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 15787, 47361, 78935, 236805, 268379, 394675, 805137, 1184025, 1341895, 4025685, 6709475, 20128425]

約数ペア:

[(1, 20128425), (3, 6709475), (5, 4025685), (15, 1341895), (17, 1184025), (25, 805137), (51, 394675), (75, 268379), (85, 236805), (255, 78935), (425, 47361), (1275, 15787)]