128669620

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{25033}}^1$

素因数の和:25299

約数の個数: 24

約数和(自身を含む): 271268424

約数和(自身を除く): 142598804

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 25033, 50066, 100132, 125165, 250330, 500660, 6433481, 12866962, 25733924, 32167405, 64334810, 128669620]

約数ペア:

[(1, 128669620), (2, 64334810), (4, 32167405), (5, 25733924), (10, 12866962), (20, 6433481), (257, 500660), (514, 250330), (1028, 125165), (1285, 100132), (2570, 50066), (5140, 25033)]