19910040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1999}}^1$

素因数の和:2096

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 40569960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 83, 120, 166, 249, 332, 415, 498, 664, 830, 996, 1245, 1660, 1992, 1999, 2490, 3320, 3998, 4980, 5997, 7996, 9960, 9995, 11994, 15992, 19990, 23988, 29985, 39980, 47976, 59970, 79960, 119940, 165917, 239880, 331834, 497751, 663668, 829585, 995502, 1327336, 1659170, 1991004, 2488755, 3318340, 3982008, 4977510, 6636680, 9955020, 19910040]

約数ペア:

[(1, 19910040), (2, 9955020), (3, 6636680), (4, 4977510), (5, 3982008), (6, 3318340), (8, 2488755), (10, 1991004), (12, 1659170), (15, 1327336), (20, 995502), (24, 829585), (30, 663668), (40, 497751), (60, 331834), (83, 239880), (120, 165917), (166, 119940), (249, 79960), (332, 59970), (415, 47976), (498, 39980), (664, 29985), (830, 23988), (996, 19990), (1245, 15992), (1660, 11994), (1992, 9995), (1999, 9960), (2490, 7996), (3320, 5997), (3998, 4980)]