12685520

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{617}}^1$

素因数の和:887

約数の個数: 40

約数和(自身を含む): 29656584

約数和(自身を除く): 16971064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 617, 1028, 1234, 1285, 2056, 2468, 2570, 3085, 4112, 4936, 5140, 6170, 9872, 10280, 12340, 20560, 24680, 49360, 158569, 317138, 634276, 792845, 1268552, 1585690, 2537104, 3171380, 6342760, 12685520]

約数ペア:

[(1, 12685520), (2, 6342760), (4, 3171380), (5, 2537104), (8, 1585690), (10, 1268552), (16, 792845), (20, 634276), (40, 317138), (80, 158569), (257, 49360), (514, 24680), (617, 20560), (1028, 12340), (1234, 10280), (1285, 9872), (2056, 6170), (2468, 5140), (2570, 4936), (3085, 4112)]