89955000

素因数分解:

$2^3\times 3^2\times 5^4\times {\mathrm{1999}}^1$

素因数の和:2031

約数の個数: 120

約数和(自身を含む): 304590000

約数和(自身を除く): 214635000

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, 625, 750, 900, 1000, 1125, 1250, 1500, 1800, 1875, 1999, 2250, 2500, 3000, 3750, 3998, 4500, 5000, 5625, 5997, 7500, 7996, 9000, 9995, 11250, 11994, 15000, 15992, 17991, 19990, 22500, 23988, 29985, 35982, 39980, 45000, 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, 1249375, 1499250, 1799100, 1999000, 2248875, 2498750, 2998500, 3598200, 3748125, 4497750, 4997500, 5997000, 7496250, 8995500, 9995000, 11244375, 14992500, 17991000, 22488750, 29985000, 44977500, 89955000]

約数ペア:

[(1, 89955000), (2, 44977500), (3, 29985000), (4, 22488750), (5, 17991000), (6, 14992500), (8, 11244375), (9, 9995000), (10, 8995500), (12, 7496250), (15, 5997000), (18, 4997500), (20, 4497750), (24, 3748125), (25, 3598200), (30, 2998500), (36, 2498750), (40, 2248875), (45, 1999000), (50, 1799100), (60, 1499250), (72, 1249375), (75, 1199400), (90, 999500), (100, 899550), (120, 749625), (125, 719640), (150, 599700), (180, 499750), (200, 449775), (225, 399800), (250, 359820), (300, 299850), (360, 249875), (375, 239880), (450, 199900), (500, 179910), (600, 149925), (625, 143928), (750, 119940), (900, 99950), (1000, 89955), (1125, 79960), (1250, 71964), (1500, 59970), (1800, 49975), (1875, 47976), (1999, 45000), (2250, 39980), (2500, 35982), (3000, 29985), (3750, 23988), (3998, 22500), (4500, 19990), (5000, 17991), (5625, 15992), (5997, 15000), (7500, 11994), (7996, 11250), (9000, 9995)]