128510221

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{8839}}^1$

素因数の和:8944

約数の個数: 16

約数和(自身を含む): 153886720

約数和(自身を除く): 25376499

約数列:

[1, 7, 31, 67, 217, 469, 2077, 8839, 14539, 61873, 274009, 592213, 1918063, 4145491, 18358603, 128510221]

約数ペア:

[(1, 128510221), (7, 18358603), (31, 4145491), (67, 1918063), (217, 592213), (469, 274009), (2077, 61873), (8839, 14539)]