257735492

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{21557}}^1$

素因数の和:21636

約数の個数: 36

約数和(自身を含む): 533301804

約数和(自身を除く): 275566312

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 244, 427, 854, 1708, 2989, 5978, 11956, 21557, 43114, 86228, 150899, 301798, 603596, 1056293, 1314977, 2112586, 2629954, 4225172, 5259908, 9204839, 18409678, 36819356, 64433873, 128867746, 257735492]

約数ペア:

[(1, 257735492), (2, 128867746), (4, 64433873), (7, 36819356), (14, 18409678), (28, 9204839), (49, 5259908), (61, 4225172), (98, 2629954), (122, 2112586), (196, 1314977), (244, 1056293), (427, 603596), (854, 301798), (1708, 150899), (2989, 86228), (5978, 43114), (11956, 21557)]