199980275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{727201}}^1$

素因数の和:727222

約数の個数: 12

約数和(自身を含む): 270519144

約数和(自身を除く): 70538869

約数列:

[1, 5, 11, 25, 55, 275, 727201, 3636005, 7999211, 18180025, 39996055, 199980275]

約数ペア:

[(1, 199980275), (5, 39996055), (11, 18180025), (25, 7999211), (55, 3636005), (275, 727201)]