51584440

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1951}}^1$

素因数の和:2623

約数の個数: 32

約数和(自身を含む): 116300160

約数和(自身を除く): 64715720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 1951, 2644, 3305, 3902, 5288, 6610, 7804, 9755, 13220, 15608, 19510, 26440, 39020, 78040, 1289611, 2579222, 5158444, 6448055, 10316888, 12896110, 25792220, 51584440]

約数ペア:

[(1, 51584440), (2, 25792220), (4, 12896110), (5, 10316888), (8, 6448055), (10, 5158444), (20, 2579222), (40, 1289611), (661, 78040), (1322, 39020), (1951, 26440), (2644, 19510), (3305, 15608), (3902, 13220), (5288, 9755), (6610, 7804)]