19637920

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{883}}^1$

素因数の和:1037

約数の個数: 48

約数和(自身を含む): 46781280

約数和(自身を除く): 27143360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 883, 1112, 1390, 1766, 2224, 2780, 3532, 4415, 4448, 5560, 7064, 8830, 11120, 14128, 17660, 22240, 28256, 35320, 70640, 122737, 141280, 245474, 490948, 613685, 981896, 1227370, 1963792, 2454740, 3927584, 4909480, 9818960, 19637920]

約数ペア:

[(1, 19637920), (2, 9818960), (4, 4909480), (5, 3927584), (8, 2454740), (10, 1963792), (16, 1227370), (20, 981896), (32, 613685), (40, 490948), (80, 245474), (139, 141280), (160, 122737), (278, 70640), (556, 35320), (695, 28256), (883, 22240), (1112, 17660), (1390, 14128), (1766, 11120), (2224, 8830), (2780, 7064), (3532, 5560), (4415, 4448)]