18650863

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{131}}^1$

素因数の和:235

約数の個数: 24

約数和(自身を含む): 23988096

約数和(自身を除く): 5337233

約数列:

[1, 7, 11, 43, 77, 131, 301, 473, 917, 1441, 1849, 3311, 5633, 10087, 12943, 20339, 39431, 61963, 142373, 242219, 433741, 1695533, 2664409, 18650863]

約数ペア:

[(1, 18650863), (7, 2664409), (11, 1695533), (43, 433741), (77, 242219), (131, 142373), (301, 61963), (473, 39431), (917, 20339), (1441, 12943), (1849, 10087), (3311, 5633)]