1799440040

素因数分解:

$2^3\times 5^1\times {\mathrm{4999}}^1\times {\mathrm{8999}}^1$

素因数の和:14009

約数の個数: 32

約数和(自身を含む): 4050000000

約数和(自身を除く): 2250559960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4999, 8999, 9998, 17998, 19996, 24995, 35996, 39992, 44995, 49990, 71992, 89990, 99980, 179980, 199960, 359960, 44986001, 89972002, 179944004, 224930005, 359888008, 449860010, 899720020, 1799440040]

約数ペア:

[(1, 1799440040), (2, 899720020), (4, 449860010), (5, 359888008), (8, 224930005), (10, 179944004), (20, 89972002), (40, 44986001), (4999, 359960), (8999, 199960), (9998, 179980), (17998, 99980), (19996, 89990), (24995, 71992), (35996, 49990), (39992, 44995)]