209999900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{190909}}^1$

素因数の和:190934

約数の個数: 36

約数和(自身を含む): 497129640

約数和(自身を除く): 287129740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 190909, 381818, 763636, 954545, 1909090, 2099999, 3818180, 4199998, 4772725, 8399996, 9545450, 10499995, 19090900, 20999990, 41999980, 52499975, 104999950, 209999900]

約数ペア:

[(1, 209999900), (2, 104999950), (4, 52499975), (5, 41999980), (10, 20999990), (11, 19090900), (20, 10499995), (22, 9545450), (25, 8399996), (44, 4772725), (50, 4199998), (55, 3818180), (100, 2099999), (110, 1909090), (220, 954545), (275, 763636), (550, 381818), (1100, 190909)]