78761480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281291}}^1$

素因数の和:281309

約数の個数: 32

約数和(自身を含む): 202530240

約数和(自身を除く): 123768760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281291, 562582, 1125164, 1406455, 1969037, 2250328, 2812910, 3938074, 5625820, 7876148, 9845185, 11251640, 15752296, 19690370, 39380740, 78761480]

約数ペア:

[(1, 78761480), (2, 39380740), (4, 19690370), (5, 15752296), (7, 11251640), (8, 9845185), (10, 7876148), (14, 5625820), (20, 3938074), (28, 2812910), (35, 2250328), (40, 1969037), (56, 1406455), (70, 1125164), (140, 562582), (280, 281291)]