28680020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1259}}^1$

素因数の和:1352

約数の個数: 48

約数和(自身を含む): 64774080

約数和(自身を除く): 36094060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 1139, 1259, 1340, 2278, 2518, 4556, 5036, 5695, 6295, 11390, 12590, 21403, 22780, 25180, 42806, 84353, 85612, 107015, 168706, 214030, 337412, 421765, 428060, 843530, 1434001, 1687060, 2868002, 5736004, 7170005, 14340010, 28680020]

約数ペア:

[(1, 28680020), (2, 14340010), (4, 7170005), (5, 5736004), (10, 2868002), (17, 1687060), (20, 1434001), (34, 843530), (67, 428060), (68, 421765), (85, 337412), (134, 214030), (170, 168706), (268, 107015), (335, 85612), (340, 84353), (670, 42806), (1139, 25180), (1259, 22780), (1340, 21403), (2278, 12590), (2518, 11390), (4556, 6295), (5036, 5695)]