12864100

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{653}}^1$

素因数の和:864

約数の個数: 36

約数和(自身を含む): 28099764

約数和(自身を除く): 15235664

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 653, 788, 985, 1306, 1970, 2612, 3265, 3940, 4925, 6530, 9850, 13060, 16325, 19700, 32650, 65300, 128641, 257282, 514564, 643205, 1286410, 2572820, 3216025, 6432050, 12864100]

約数ペア:

[(1, 12864100), (2, 6432050), (4, 3216025), (5, 2572820), (10, 1286410), (20, 643205), (25, 514564), (50, 257282), (100, 128641), (197, 65300), (394, 32650), (653, 19700), (788, 16325), (985, 13060), (1306, 9850), (1970, 6530), (2612, 4925), (3265, 3940)]