199912100

素因数分解:

$2^2\times 5^2\times {\mathrm{1999121}}^1$

素因数の和:1999135

約数の個数: 18

約数和(自身を含む): 433809474

約数和(自身を除く): 233897374

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1999121, 3998242, 7996484, 9995605, 19991210, 39982420, 49978025, 99956050, 199912100]

約数ペア:

[(1, 199912100), (2, 99956050), (4, 49978025), (5, 39982420), (10, 19991210), (20, 9995605), (25, 7996484), (50, 3998242), (100, 1999121)]