18220720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{32537}}^1$

素因数の和:32557

約数の個数: 40

約数和(自身を含む): 48416544

約数和(自身を除く): 30195824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 32537, 65074, 130148, 162685, 227759, 260296, 325370, 455518, 520592, 650740, 911036, 1138795, 1301480, 1822072, 2277590, 2602960, 3644144, 4555180, 9110360, 18220720]

約数ペア:

[(1, 18220720), (2, 9110360), (4, 4555180), (5, 3644144), (7, 2602960), (8, 2277590), (10, 1822072), (14, 1301480), (16, 1138795), (20, 911036), (28, 650740), (35, 520592), (40, 455518), (56, 325370), (70, 260296), (80, 227759), (112, 162685), (140, 130148), (280, 65074), (560, 32537)]