20507280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{85447}}^1$

素因数の和:85463

約数の個数: 40

約数和(自身を含む): 63573312

約数和(自身を除く): 43066032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 85447, 170894, 256341, 341788, 427235, 512682, 683576, 854470, 1025364, 1281705, 1367152, 1708940, 2050728, 2563410, 3417880, 4101456, 5126820, 6835760, 10253640, 20507280]

約数ペア:

[(1, 20507280), (2, 10253640), (3, 6835760), (4, 5126820), (5, 4101456), (6, 3417880), (8, 2563410), (10, 2050728), (12, 1708940), (15, 1367152), (16, 1281705), (20, 1025364), (24, 854470), (30, 683576), (40, 512682), (48, 427235), (60, 341788), (80, 256341), (120, 170894), (240, 85447)]