257020976

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{397}}^1\times {\mathrm{941}}^1$

素因数の和:1389

約数の個数: 40

約数和(自身を含む): 511385424

約数和(自身を除く): 254364448

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 397, 688, 794, 941, 1588, 1882, 3176, 3764, 6352, 7528, 15056, 17071, 34142, 40463, 68284, 80926, 136568, 161852, 273136, 323704, 373577, 647408, 747154, 1494308, 2988616, 5977232, 16063811, 32127622, 64255244, 128510488, 257020976]

約数ペア:

[(1, 257020976), (2, 128510488), (4, 64255244), (8, 32127622), (16, 16063811), (43, 5977232), (86, 2988616), (172, 1494308), (344, 747154), (397, 647408), (688, 373577), (794, 323704), (941, 273136), (1588, 161852), (1882, 136568), (3176, 80926), (3764, 68284), (6352, 40463), (7528, 34142), (15056, 17071)]