202002020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{9091}}^1$

素因数の和:9212

約数の個数: 48

約数和(自身を含む): 467401536

約数和(自身を除く): 265399516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 2020, 2222, 4444, 5555, 9091, 11110, 18182, 22220, 36364, 45455, 90910, 100001, 181820, 200002, 400004, 500005, 918191, 1000010, 1836382, 2000020, 3672764, 4590955, 9181910, 10100101, 18363820, 20200202, 40400404, 50500505, 101001010, 202002020]

約数ペア:

[(1, 202002020), (2, 101001010), (4, 50500505), (5, 40400404), (10, 20200202), (11, 18363820), (20, 10100101), (22, 9181910), (44, 4590955), (55, 3672764), (101, 2000020), (110, 1836382), (202, 1000010), (220, 918191), (404, 500005), (505, 400004), (1010, 200002), (1111, 181820), (2020, 100001), (2222, 90910), (4444, 45455), (5555, 36364), (9091, 22220), (11110, 18182)]