21252940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36643}}^1$

素因数の和:36681

約数の個数: 24

約数和(自身を含む): 46171440

約数和(自身を除く): 24918500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36643, 73286, 146572, 183215, 366430, 732860, 1062647, 2125294, 4250588, 5313235, 10626470, 21252940]

約数ペア:

[(1, 21252940), (2, 10626470), (4, 5313235), (5, 4250588), (10, 2125294), (20, 1062647), (29, 732860), (58, 366430), (116, 183215), (145, 146572), (290, 73286), (580, 36643)]