128525720

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{5647}}^1$

素因数の和:6227

約数の個数: 32

約数和(自身を含む): 289742400

約数和(自身を除く): 161216680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 1138, 2276, 2845, 4552, 5647, 5690, 11294, 11380, 22588, 22760, 28235, 45176, 56470, 112940, 225880, 3213143, 6426286, 12852572, 16065715, 25705144, 32131430, 64262860, 128525720]

約数ペア:

[(1, 128525720), (2, 64262860), (4, 32131430), (5, 25705144), (8, 16065715), (10, 12852572), (20, 6426286), (40, 3213143), (569, 225880), (1138, 112940), (2276, 56470), (2845, 45176), (4552, 28235), (5647, 22760), (5690, 22588), (11294, 11380)]