28001560

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2789}}^1$

素因数の和:3051

約数の個数: 32

約数和(自身を含む): 63277200

約数和(自身を除く): 35275640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 2789, 5020, 5578, 10040, 11156, 13945, 22312, 27890, 55780, 111560, 700039, 1400078, 2800156, 3500195, 5600312, 7000390, 14000780, 28001560]

約数ペア:

[(1, 28001560), (2, 14000780), (4, 7000390), (5, 5600312), (8, 3500195), (10, 2800156), (20, 1400078), (40, 700039), (251, 111560), (502, 55780), (1004, 27890), (1255, 22312), (2008, 13945), (2510, 11156), (2789, 10040), (5020, 5578)]