12916820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 31207680

約数和(自身を除く): 18290860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 359, 514, 718, 1028, 1285, 1436, 1795, 1799, 2513, 2570, 3590, 3598, 5026, 5140, 7180, 7196, 8995, 10052, 12565, 17990, 25130, 35980, 50260, 92263, 184526, 369052, 461315, 645841, 922630, 1291682, 1845260, 2583364, 3229205, 6458410, 12916820]

約数ペア:

[(1, 12916820), (2, 6458410), (4, 3229205), (5, 2583364), (7, 1845260), (10, 1291682), (14, 922630), (20, 645841), (28, 461315), (35, 369052), (70, 184526), (140, 92263), (257, 50260), (359, 35980), (514, 25130), (718, 17990), (1028, 12565), (1285, 10052), (1436, 8995), (1795, 7196), (1799, 7180), (2513, 5140), (2570, 5026), (3590, 3598)]