128520389

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 149299200

約数和(自身を除く): 20778811

約数列:

[1, 19, 23, 31, 53, 179, 437, 589, 713, 1007, 1219, 1643, 3401, 4117, 5549, 9487, 13547, 23161, 31217, 37789, 78223, 105431, 127627, 180253, 218201, 294097, 717991, 2424913, 4145819, 5587843, 6764231, 128520389]

約数ペア:

[(1, 128520389), (19, 6764231), (23, 5587843), (31, 4145819), (53, 2424913), (179, 717991), (437, 294097), (589, 218201), (713, 180253), (1007, 127627), (1219, 105431), (1643, 78223), (3401, 37789), (4117, 31217), (5549, 23161), (9487, 13547)]