19997860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14083}}^1$

素因数の和:14163

約数の個数: 24

約数和(自身を含む): 42590016

約数和(自身を除く): 22592156

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14083, 28166, 56332, 70415, 140830, 281660, 999893, 1999786, 3999572, 4999465, 9998930, 19997860]

約数ペア:

[(1, 19997860), (2, 9998930), (4, 4999465), (5, 3999572), (10, 1999786), (20, 999893), (71, 281660), (142, 140830), (284, 70415), (355, 56332), (710, 28166), (1420, 14083)]