18263720

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{811}}^1$

素因数の和:1385

約数の個数: 32

約数和(自身を含む): 41217120

約数和(自身を除く): 22953400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 811, 1126, 1622, 2252, 2815, 3244, 4055, 4504, 5630, 6488, 8110, 11260, 16220, 22520, 32440, 456593, 913186, 1826372, 2282965, 3652744, 4565930, 9131860, 18263720]

約数ペア:

[(1, 18263720), (2, 9131860), (4, 4565930), (5, 3652744), (8, 2282965), (10, 1826372), (20, 913186), (40, 456593), (563, 32440), (811, 22520), (1126, 16220), (1622, 11260), (2252, 8110), (2815, 6488), (3244, 5630), (4055, 4504)]