16668280

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3823}}^1$

素因数の和:3943

約数の個数: 32

約数和(自身を含む): 37857600

約数和(自身を除く): 21189320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 3823, 4360, 7646, 15292, 19115, 30584, 38230, 76460, 152920, 416707, 833414, 1666828, 2083535, 3333656, 4167070, 8334140, 16668280]

約数ペア:

[(1, 16668280), (2, 8334140), (4, 4167070), (5, 3333656), (8, 2083535), (10, 1666828), (20, 833414), (40, 416707), (109, 152920), (218, 76460), (436, 38230), (545, 30584), (872, 19115), (1090, 15292), (2180, 7646), (3823, 4360)]