638897170

素因数分解:

$2^1\times 5^1\times {\mathrm{4937}}^1\times {\mathrm{12941}}^1$

素因数の和:17885

約数の個数: 16

約数和(自身を含む): 1150336728

約数和(自身を除く): 511439558

約数列:

[1, 2, 5, 10, 4937, 9874, 12941, 24685, 25882, 49370, 64705, 129410, 63889717, 127779434, 319448585, 638897170]

約数ペア:

[(1, 638897170), (2, 319448585), (5, 127779434), (10, 63889717), (4937, 129410), (9874, 64705), (12941, 49370), (24685, 25882)]