20147480

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4987}}^1$

素因数の和:5099

約数の個数: 32

約数和(自身を含む): 45789840

約数和(自身を除く): 25642360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4987, 9974, 19948, 24935, 39896, 49870, 99740, 199480, 503687, 1007374, 2014748, 2518435, 4029496, 5036870, 10073740, 20147480]

約数ペア:

[(1, 20147480), (2, 10073740), (4, 5036870), (5, 4029496), (8, 2518435), (10, 2014748), (20, 1007374), (40, 503687), (101, 199480), (202, 99740), (404, 49870), (505, 39896), (808, 24935), (1010, 19948), (2020, 9974), (4040, 4987)]