2021982220

素因数分解:

$2^2\times 5^1\times {\mathrm{9901}}^1\times {\mathrm{10211}}^1$

素因数の和:20121

約数の個数: 24

約数和(自身を含む): 4247007408

約数和(自身を除く): 2225025188

約数列:

[1, 2, 4, 5, 10, 20, 9901, 10211, 19802, 20422, 39604, 40844, 49505, 51055, 99010, 102110, 198020, 204220, 101099111, 202198222, 404396444, 505495555, 1010991110, 2021982220]

約数ペア:

[(1, 2021982220), (2, 1010991110), (4, 505495555), (5, 404396444), (10, 202198222), (20, 101099111), (9901, 204220), (10211, 198020), (19802, 102110), (20422, 99010), (39604, 51055), (40844, 49505)]