21180104

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2383}}^1$

素因数の和:2501

約数の個数: 32

約数和(自身を含む): 43770240

約数和(自身を除く): 22590136

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2222, 2383, 4444, 4766, 8888, 9532, 19064, 26213, 52426, 104852, 209704, 240683, 481366, 962732, 1925464, 2647513, 5295026, 10590052, 21180104]

約数ペア:

[(1, 21180104), (2, 10590052), (4, 5295026), (8, 2647513), (11, 1925464), (22, 962732), (44, 481366), (88, 240683), (101, 209704), (202, 104852), (404, 52426), (808, 26213), (1111, 19064), (2222, 9532), (2383, 8888), (4444, 4766)]