12457960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7243}}^1$

素因数の和:7297

約数の個数: 32

約数和(自身を含む): 28686240

約数和(自身を除く): 16228280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7243, 14486, 28972, 36215, 57944, 72430, 144860, 289720, 311449, 622898, 1245796, 1557245, 2491592, 3114490, 6228980, 12457960]

約数ペア:

[(1, 12457960), (2, 6228980), (4, 3114490), (5, 2491592), (8, 1557245), (10, 1245796), (20, 622898), (40, 311449), (43, 289720), (86, 144860), (172, 72430), (215, 57944), (344, 36215), (430, 28972), (860, 14486), (1720, 7243)]