28910240

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1789}}^1$

素因数の和:1905

約数の個数: 48

約数和(自身を含む): 69015240

約数和(自身を除く): 40105000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 1789, 2020, 3232, 3578, 4040, 7156, 8080, 8945, 14312, 16160, 17890, 28624, 35780, 57248, 71560, 143120, 180689, 286240, 361378, 722756, 903445, 1445512, 1806890, 2891024, 3613780, 5782048, 7227560, 14455120, 28910240]

約数ペア:

[(1, 28910240), (2, 14455120), (4, 7227560), (5, 5782048), (8, 3613780), (10, 2891024), (16, 1806890), (20, 1445512), (32, 903445), (40, 722756), (80, 361378), (101, 286240), (160, 180689), (202, 143120), (404, 71560), (505, 57248), (808, 35780), (1010, 28624), (1616, 17890), (1789, 16160), (2020, 14312), (3232, 8945), (3578, 8080), (4040, 7156)]