17991000

素因数分解:

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

素因数の和:2026

約数の個数: 96

約数和(自身を含む): 60840000

約数和(自身を除く): 42849000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 125, 150, 180, 200, 225, 250, 300, 360, 375, 450, 500, 600, 750, 900, 1000, 1125, 1500, 1800, 1999, 2250, 3000, 3998, 4500, 5997, 7996, 9000, 9995, 11994, 15992, 17991, 19990, 23988, 29985, 35982, 39980, 47976, 49975, 59970, 71964, 79960, 89955, 99950, 119940, 143928, 149925, 179910, 199900, 239880, 249875, 299850, 359820, 399800, 449775, 499750, 599700, 719640, 749625, 899550, 999500, 1199400, 1499250, 1799100, 1999000, 2248875, 2998500, 3598200, 4497750, 5997000, 8995500, 17991000]

約数ペア:

[(1, 17991000), (2, 8995500), (3, 5997000), (4, 4497750), (5, 3598200), (6, 2998500), (8, 2248875), (9, 1999000), (10, 1799100), (12, 1499250), (15, 1199400), (18, 999500), (20, 899550), (24, 749625), (25, 719640), (30, 599700), (36, 499750), (40, 449775), (45, 399800), (50, 359820), (60, 299850), (72, 249875), (75, 239880), (90, 199900), (100, 179910), (120, 149925), (125, 143928), (150, 119940), (180, 99950), (200, 89955), (225, 79960), (250, 71964), (300, 59970), (360, 49975), (375, 47976), (450, 39980), (500, 35982), (600, 29985), (750, 23988), (900, 19990), (1000, 17991), (1125, 15992), (1500, 11994), (1800, 9995), (1999, 9000), (2250, 7996), (3000, 5997), (3998, 4500)]