257774478

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{143687}}^1$

素因数の和:143728

約数の個数: 32

約数和(自身を含む): 579350016

約数和(自身を除く): 321575538

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 138, 299, 598, 897, 1794, 143687, 287374, 431061, 862122, 1867931, 3304801, 3735862, 5603793, 6609602, 9914403, 11207586, 19828806, 42962413, 85924826, 128887239, 257774478]

約数ペア:

[(1, 257774478), (2, 128887239), (3, 85924826), (6, 42962413), (13, 19828806), (23, 11207586), (26, 9914403), (39, 6609602), (46, 5603793), (69, 3735862), (78, 3304801), (138, 1867931), (299, 862122), (598, 431061), (897, 287374), (1794, 143687)]