28404440

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4523}}^1$

素因数の和:4691

約数の個数: 32

約数和(自身を含む): 64331280

約数和(自身を除く): 35926840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 4523, 6280, 9046, 18092, 22615, 36184, 45230, 90460, 180920, 710111, 1420222, 2840444, 3550555, 5680888, 7101110, 14202220, 28404440]

約数ペア:

[(1, 28404440), (2, 14202220), (4, 7101110), (5, 5680888), (8, 3550555), (10, 2840444), (20, 1420222), (40, 710111), (157, 180920), (314, 90460), (628, 45230), (785, 36184), (1256, 22615), (1570, 18092), (3140, 9046), (4523, 6280)]