20259040

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{997}}^1$

素因数の和:1139

約数の個数: 48

約数和(自身を含む): 48287232

約数和(自身を除く): 28028192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 997, 1016, 1270, 1994, 2032, 2540, 3988, 4064, 4985, 5080, 7976, 9970, 10160, 15952, 19940, 20320, 31904, 39880, 79760, 126619, 159520, 253238, 506476, 633095, 1012952, 1266190, 2025904, 2532380, 4051808, 5064760, 10129520, 20259040]

約数ペア:

[(1, 20259040), (2, 10129520), (4, 5064760), (5, 4051808), (8, 2532380), (10, 2025904), (16, 1266190), (20, 1012952), (32, 633095), (40, 506476), (80, 253238), (127, 159520), (160, 126619), (254, 79760), (508, 39880), (635, 31904), (997, 20320), (1016, 19940), (1270, 15952), (1994, 10160), (2032, 9970), (2540, 7976), (3988, 5080), (4064, 4985)]