20178390860

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5121419}}^1$

素因数の和:5121625

約数の個数: 24

約数和(自身を含む): 42589728720

約数和(自身を除く): 22411337860

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5121419, 10242838, 20485676, 25607095, 51214190, 102428380, 1008919543, 2017839086, 4035678172, 5044597715, 10089195430, 20178390860]

約数ペア:

[(1, 20178390860), (2, 10089195430), (4, 5044597715), (5, 4035678172), (10, 2017839086), (20, 1008919543), (197, 102428380), (394, 51214190), (788, 25607095), (985, 20485676), (1970, 10242838), (3940, 5121419)]