21680080

素因数分解:

$2^4\times 5^1\times {\mathrm{457}}^1\times {\mathrm{593}}^1$

素因数の和:1063

約数の個数: 40

約数和(自身を含む): 50601672

約数和(自身を除く): 28921592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 457, 593, 914, 1186, 1828, 2285, 2372, 2965, 3656, 4570, 4744, 5930, 7312, 9140, 9488, 11860, 18280, 23720, 36560, 47440, 271001, 542002, 1084004, 1355005, 2168008, 2710010, 4336016, 5420020, 10840040, 21680080]

約数ペア:

[(1, 21680080), (2, 10840040), (4, 5420020), (5, 4336016), (8, 2710010), (10, 2168008), (16, 1355005), (20, 1084004), (40, 542002), (80, 271001), (457, 47440), (593, 36560), (914, 23720), (1186, 18280), (1828, 11860), (2285, 9488), (2372, 9140), (2965, 7312), (3656, 5930), (4570, 4744)]