855780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 2540160

約数和(自身を除く): 1684380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 839, 1020, 1678, 2517, 3356, 4195, 5034, 8390, 10068, 12585, 14263, 16780, 25170, 28526, 42789, 50340, 57052, 71315, 85578, 142630, 171156, 213945, 285260, 427890, 855780]

約数ペア:

[(1, 855780), (2, 427890), (3, 285260), (4, 213945), (5, 171156), (6, 142630), (10, 85578), (12, 71315), (15, 57052), (17, 50340), (20, 42789), (30, 28526), (34, 25170), (51, 16780), (60, 14263), (68, 12585), (85, 10068), (102, 8390), (170, 5034), (204, 4195), (255, 3356), (340, 2517), (510, 1678), (839, 1020)]