128212100

素因数分解:

$2^2\times 5^2\times {\mathrm{1282121}}^1$

素因数の和:1282135

約数の個数: 18

約数和(自身を含む): 278220474

約数和(自身を除く): 150008374

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1282121, 2564242, 5128484, 6410605, 12821210, 25642420, 32053025, 64106050, 128212100]

約数ペア:

[(1, 128212100), (2, 64106050), (4, 32053025), (5, 25642420), (10, 12821210), (20, 6410605), (25, 5128484), (50, 2564242), (100, 1282121)]