257131504

素因数分解:

$2^4\times 7^1\times {\mathrm{2295817}}^1$

素因数の和:2295832

約数の個数: 20

約数和(自身を含む): 569362864

約数和(自身を除く): 312231360

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 2295817, 4591634, 9183268, 16070719, 18366536, 32141438, 36733072, 64282876, 128565752, 257131504]

約数ペア:

[(1, 257131504), (2, 128565752), (4, 64282876), (7, 36733072), (8, 32141438), (14, 18366536), (16, 16070719), (28, 9183268), (56, 4591634), (112, 2295817)]