38865040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4457}}^1$

素因数の和:4579

約数の個数: 40

約数和(自身を含む): 91210680

約数和(自身を除く): 52345640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 4457, 8720, 8914, 17828, 22285, 35656, 44570, 71312, 89140, 178280, 356560, 485813, 971626, 1943252, 2429065, 3886504, 4858130, 7773008, 9716260, 19432520, 38865040]

約数ペア:

[(1, 38865040), (2, 19432520), (4, 9716260), (5, 7773008), (8, 4858130), (10, 3886504), (16, 2429065), (20, 1943252), (40, 971626), (80, 485813), (109, 356560), (218, 178280), (436, 89140), (545, 71312), (872, 44570), (1090, 35656), (1744, 22285), (2180, 17828), (4360, 8914), (4457, 8720)]