257423780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{6577}}^1$

素因数の和:6708

約数の個数: 48

約数和(自身を含む): 574654080

約数和(自身を除く): 317230300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 380, 412, 515, 1030, 1957, 2060, 3914, 6577, 7828, 9785, 13154, 19570, 26308, 32885, 39140, 65770, 124963, 131540, 249926, 499852, 624815, 677431, 1249630, 1354862, 2499260, 2709724, 3387155, 6774310, 12871189, 13548620, 25742378, 51484756, 64355945, 128711890, 257423780]

約数ペア:

[(1, 257423780), (2, 128711890), (4, 64355945), (5, 51484756), (10, 25742378), (19, 13548620), (20, 12871189), (38, 6774310), (76, 3387155), (95, 2709724), (103, 2499260), (190, 1354862), (206, 1249630), (380, 677431), (412, 624815), (515, 499852), (1030, 249926), (1957, 131540), (2060, 124963), (3914, 65770), (6577, 39140), (7828, 32885), (9785, 26308), (13154, 19570)]