21380458

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{5197}}^1$

素因数の和:5238

約数の個数: 24

約数和(自身を含む): 37332036

約数和(自身を除く): 15951578

約数列:

[1, 2, 11, 17, 22, 34, 121, 187, 242, 374, 2057, 4114, 5197, 10394, 57167, 88349, 114334, 176698, 628837, 971839, 1257674, 1943678, 10690229, 21380458]

約数ペア:

[(1, 21380458), (2, 10690229), (11, 1943678), (17, 1257674), (22, 971839), (34, 628837), (121, 176698), (187, 114334), (242, 88349), (374, 57167), (2057, 10394), (4114, 5197)]