123840720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{172001}}^1$

素因数の和:172020

約数の個数: 60

約数和(自身を含む): 415900836

約数和(自身を除く): 292060116

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 172001, 344002, 516003, 688004, 860005, 1032006, 1376008, 1548009, 1720010, 2064012, 2580015, 2752016, 3096018, 3440020, 4128024, 5160030, 6192036, 6880040, 7740045, 8256048, 10320060, 12384072, 13760080, 15480090, 20640120, 24768144, 30960180, 41280240, 61920360, 123840720]

約数ペア:

[(1, 123840720), (2, 61920360), (3, 41280240), (4, 30960180), (5, 24768144), (6, 20640120), (8, 15480090), (9, 13760080), (10, 12384072), (12, 10320060), (15, 8256048), (16, 7740045), (18, 6880040), (20, 6192036), (24, 5160030), (30, 4128024), (36, 3440020), (40, 3096018), (45, 2752016), (48, 2580015), (60, 2064012), (72, 1720010), (80, 1548009), (90, 1376008), (120, 1032006), (144, 860005), (180, 688004), (240, 516003), (360, 344002), (720, 172001)]