28225840

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{907}}^1$

素因数の和:1309

約数の個数: 40

約数和(自身を含む): 65866320

約数和(自身を除く): 37640480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 907, 1556, 1814, 1945, 3112, 3628, 3890, 4535, 6224, 7256, 7780, 9070, 14512, 15560, 18140, 31120, 36280, 72560, 352823, 705646, 1411292, 1764115, 2822584, 3528230, 5645168, 7056460, 14112920, 28225840]

約数ペア:

[(1, 28225840), (2, 14112920), (4, 7056460), (5, 5645168), (8, 3528230), (10, 2822584), (16, 1764115), (20, 1411292), (40, 705646), (80, 352823), (389, 72560), (778, 36280), (907, 31120), (1556, 18140), (1814, 15560), (1945, 14512), (3112, 9070), (3628, 7780), (3890, 7256), (4535, 6224)]