18259171

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 23592960

約数和(自身を除く): 5333789

約数列:

[1, 7, 19, 23, 47, 127, 133, 161, 329, 437, 889, 893, 1081, 2413, 2921, 3059, 5969, 6251, 7567, 16891, 20447, 20539, 41783, 55499, 113411, 137287, 143773, 388493, 793877, 961009, 2608453, 18259171]

約数ペア:

[(1, 18259171), (7, 2608453), (19, 961009), (23, 793877), (47, 388493), (127, 143773), (133, 137287), (161, 113411), (329, 55499), (437, 41783), (889, 20539), (893, 20447), (1081, 16891), (2413, 7567), (2921, 6251), (3059, 5969)]