856064860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{43991}}^1$

素因数の和:44146

約数の個数: 48

約数和(自身を含む): 2069383680

約数和(自身を除く): 1213318820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 19460, 43991, 87982, 175964, 219955, 307937, 439910, 615874, 879820, 1231748, 1539685, 3079370, 6114749, 6158740, 12229498, 24458996, 30573745, 42803243, 61147490, 85606486, 122294980, 171212972, 214016215, 428032430, 856064860]

約数ペア:

[(1, 856064860), (2, 428032430), (4, 214016215), (5, 171212972), (7, 122294980), (10, 85606486), (14, 61147490), (20, 42803243), (28, 30573745), (35, 24458996), (70, 12229498), (139, 6158740), (140, 6114749), (278, 3079370), (556, 1539685), (695, 1231748), (973, 879820), (1390, 615874), (1946, 439910), (2780, 307937), (3892, 219955), (4865, 175964), (9730, 87982), (19460, 43991)]