2162840

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 4914000

約数和(自身を除く): 2751160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 389, 556, 695, 778, 1112, 1390, 1556, 1945, 2780, 3112, 3890, 5560, 7780, 15560, 54071, 108142, 216284, 270355, 432568, 540710, 1081420, 2162840]

約数ペア:

[(1, 2162840), (2, 1081420), (4, 540710), (5, 432568), (8, 270355), (10, 216284), (20, 108142), (40, 54071), (139, 15560), (278, 7780), (389, 5560), (556, 3890), (695, 3112), (778, 2780), (1112, 1945), (1390, 1556)]