639804584

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{311189}}^1$

素因数の和:311452

約数の個数: 16

約数和(自身を含む): 1204305300

約数和(自身を除く): 564500716

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 311189, 622378, 1244756, 2489512, 79975573, 159951146, 319902292, 639804584]

約数ペア:

[(1, 639804584), (2, 319902292), (4, 159951146), (8, 79975573), (257, 2489512), (514, 1244756), (1028, 622378), (2056, 311189)]