21044360

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5209}}^1$

素因数の和:5321

約数の個数: 32

約数和(自身を含む): 47827800

約数和(自身を除く): 26783440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5209, 10418, 20836, 26045, 41672, 52090, 104180, 208360, 526109, 1052218, 2104436, 2630545, 4208872, 5261090, 10522180, 21044360]

約数ペア:

[(1, 21044360), (2, 10522180), (4, 5261090), (5, 4208872), (8, 2630545), (10, 2104436), (20, 1052218), (40, 526109), (101, 208360), (202, 104180), (404, 52090), (505, 41672), (808, 26045), (1010, 20836), (2020, 10418), (4040, 5209)]