1618443920

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{128857}}^1$

素因数の和:129027

約数の個数: 40

約数和(自身を含む): 3786878904

約数和(自身を除く): 2168434984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2512, 3140, 6280, 12560, 128857, 257714, 515428, 644285, 1030856, 1288570, 2061712, 2577140, 5154280, 10308560, 20230549, 40461098, 80922196, 101152745, 161844392, 202305490, 323688784, 404610980, 809221960, 1618443920]

約数ペア:

[(1, 1618443920), (2, 809221960), (4, 404610980), (5, 323688784), (8, 202305490), (10, 161844392), (16, 101152745), (20, 80922196), (40, 40461098), (80, 20230549), (157, 10308560), (314, 5154280), (628, 2577140), (785, 2061712), (1256, 1288570), (1570, 1030856), (2512, 644285), (3140, 515428), (6280, 257714), (12560, 128857)]