20748320

素因数分解:

$2^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1259}}^1$

素因数の和:1377

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 28784800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 103, 160, 206, 412, 515, 824, 1030, 1259, 1648, 2060, 2518, 3296, 4120, 5036, 6295, 8240, 10072, 12590, 16480, 20144, 25180, 40288, 50360, 100720, 129677, 201440, 259354, 518708, 648385, 1037416, 1296770, 2074832, 2593540, 4149664, 5187080, 10374160, 20748320]

約数ペア:

[(1, 20748320), (2, 10374160), (4, 5187080), (5, 4149664), (8, 2593540), (10, 2074832), (16, 1296770), (20, 1037416), (32, 648385), (40, 518708), (80, 259354), (103, 201440), (160, 129677), (206, 100720), (412, 50360), (515, 40288), (824, 25180), (1030, 20144), (1259, 16480), (1648, 12590), (2060, 10072), (2518, 8240), (3296, 6295), (4120, 5036)]