27805720

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1787}}^1$

素因数の和:2187

約数の個数: 32

約数和(自身を含む): 62758800

約数和(自身を除く): 34953080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1787, 1945, 3112, 3574, 3890, 7148, 7780, 8935, 14296, 15560, 17870, 35740, 71480, 695143, 1390286, 2780572, 3475715, 5561144, 6951430, 13902860, 27805720]

約数ペア:

[(1, 27805720), (2, 13902860), (4, 6951430), (5, 5561144), (8, 3475715), (10, 2780572), (20, 1390286), (40, 695143), (389, 71480), (778, 35740), (1556, 17870), (1787, 15560), (1945, 14296), (3112, 8935), (3574, 7780), (3890, 7148)]