20753821

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 25660800

約数和(自身を除く): 4906979

約数列:

[1, 11, 17, 29, 43, 89, 187, 319, 473, 493, 731, 979, 1247, 1513, 2581, 3827, 5423, 8041, 13717, 16643, 21199, 28391, 42097, 43877, 65059, 110983, 233189, 482647, 715649, 1220813, 1886711, 20753821]

約数ペア:

[(1, 20753821), (11, 1886711), (17, 1220813), (29, 715649), (43, 482647), (89, 233189), (187, 110983), (319, 65059), (473, 43877), (493, 42097), (731, 28391), (979, 21199), (1247, 16643), (1513, 13717), (2581, 8041), (3827, 5423)]