4008560

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{563}}^1$

素因数の和:665

約数の個数: 40

約数和(自身を含む): 9441360

約数和(自身を除く): 5432800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 563, 712, 890, 1126, 1424, 1780, 2252, 2815, 3560, 4504, 5630, 7120, 9008, 11260, 22520, 45040, 50107, 100214, 200428, 250535, 400856, 501070, 801712, 1002140, 2004280, 4008560]

約数ペア:

[(1, 4008560), (2, 2004280), (4, 1002140), (5, 801712), (8, 501070), (10, 400856), (16, 250535), (20, 200428), (40, 100214), (80, 50107), (89, 45040), (178, 22520), (356, 11260), (445, 9008), (563, 7120), (712, 5630), (890, 4504), (1126, 3560), (1424, 2815), (1780, 2252)]