28256805

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{859}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 53127360

約数和(自身を除く): 24870555

約数列:

[1, 3, 5, 9, 15, 17, 43, 45, 51, 85, 129, 153, 215, 255, 387, 645, 731, 765, 859, 1935, 2193, 2577, 3655, 4295, 6579, 7731, 10965, 12885, 14603, 32895, 36937, 38655, 43809, 73015, 110811, 131427, 184685, 219045, 332433, 554055, 627929, 657135, 1662165, 1883787, 3139645, 5651361, 9418935, 28256805]

約数ペア:

[(1, 28256805), (3, 9418935), (5, 5651361), (9, 3139645), (15, 1883787), (17, 1662165), (43, 657135), (45, 627929), (51, 554055), (85, 332433), (129, 219045), (153, 184685), (215, 131427), (255, 110811), (387, 73015), (645, 43809), (731, 38655), (765, 36937), (859, 32895), (1935, 14603), (2193, 12885), (2577, 10965), (3655, 7731), (4295, 6579)]