80239860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1999}}^1$

素因数の和:2237

約数の個数: 72

約数和(自身を含む): 244608000

約数和(自身を除く): 164368140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 223, 446, 669, 892, 1115, 1338, 1999, 2007, 2230, 2676, 3345, 3998, 4014, 4460, 5997, 6690, 7996, 8028, 9995, 10035, 11994, 13380, 17991, 19990, 20070, 23988, 29985, 35982, 39980, 40140, 59970, 71964, 89955, 119940, 179910, 359820, 445777, 891554, 1337331, 1783108, 2228885, 2674662, 4011993, 4457770, 5349324, 6686655, 8023986, 8915540, 13373310, 16047972, 20059965, 26746620, 40119930, 80239860]

約数ペア:

[(1, 80239860), (2, 40119930), (3, 26746620), (4, 20059965), (5, 16047972), (6, 13373310), (9, 8915540), (10, 8023986), (12, 6686655), (15, 5349324), (18, 4457770), (20, 4011993), (30, 2674662), (36, 2228885), (45, 1783108), (60, 1337331), (90, 891554), (180, 445777), (223, 359820), (446, 179910), (669, 119940), (892, 89955), (1115, 71964), (1338, 59970), (1999, 40140), (2007, 39980), (2230, 35982), (2676, 29985), (3345, 23988), (3998, 20070), (4014, 19990), (4460, 17991), (5997, 13380), (6690, 11994), (7996, 10035), (8028, 9995)]