128015678

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{17351}}^1$

素因数の和:17408

約数の個数: 32

約数和(自身を含む): 239874048

約数和(自身を除く): 111858370

約数列:

[1, 2, 7, 14, 17, 31, 34, 62, 119, 217, 238, 434, 527, 1054, 3689, 7378, 17351, 34702, 121457, 242914, 294967, 537881, 589934, 1075762, 2064769, 3765167, 4129538, 7530334, 9143977, 18287954, 64007839, 128015678]

約数ペア:

[(1, 128015678), (2, 64007839), (7, 18287954), (14, 9143977), (17, 7530334), (31, 4129538), (34, 3765167), (62, 2064769), (119, 1075762), (217, 589934), (238, 537881), (434, 294967), (527, 242914), (1054, 121457), (3689, 34702), (7378, 17351)]