20278875

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{3181}}^1$

素因数の和:3216

約数の個数: 32

約数和(自身を含む): 35740224

約数和(自身を除く): 15461349

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 2125, 3181, 6375, 9543, 15905, 47715, 54077, 79525, 162231, 238575, 270385, 397625, 811155, 1192875, 1351925, 4055775, 6759625, 20278875]

約数ペア:

[(1, 20278875), (3, 6759625), (5, 4055775), (15, 1351925), (17, 1192875), (25, 811155), (51, 397625), (75, 270385), (85, 238575), (125, 162231), (255, 79525), (375, 54077), (425, 47715), (1275, 15905), (2125, 9543), (3181, 6375)]