20020028

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4441}}^1$

素因数の和:4482

約数の個数: 36

約数和(自身を含む): 42536592

約数和(自身を除く): 22516564

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4441, 4508, 8882, 17764, 31087, 62174, 102143, 124348, 204286, 217609, 408572, 435218, 715001, 870436, 1430002, 2860004, 5005007, 10010014, 20020028]

約数ペア:

[(1, 20020028), (2, 10010014), (4, 5005007), (7, 2860004), (14, 1430002), (23, 870436), (28, 715001), (46, 435218), (49, 408572), (92, 217609), (98, 204286), (161, 124348), (196, 102143), (322, 62174), (644, 31087), (1127, 17764), (2254, 8882), (4441, 4508)]