198968990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{17909}}^1$

素因数の和:18028

約数の個数: 32

約数和(自身を含む): 394593120

約数和(自身を除く): 195624130

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 2222, 5555, 11110, 17909, 35818, 89545, 179090, 196999, 393998, 984995, 1808809, 1969990, 3617618, 9044045, 18088090, 19896899, 39793798, 99484495, 198968990]

約数ペア:

[(1, 198968990), (2, 99484495), (5, 39793798), (10, 19896899), (11, 18088090), (22, 9044045), (55, 3617618), (101, 1969990), (110, 1808809), (202, 984995), (505, 393998), (1010, 196999), (1111, 179090), (2222, 89545), (5555, 35818), (11110, 17909)]