19906000

素因数分解:

$2^4\times 5^3\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:329

約数の個数: 80

約数和(自身を含む): 49617360

約数和(自身を除く): 29711360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 74, 80, 100, 125, 148, 185, 200, 250, 269, 296, 370, 400, 500, 538, 592, 740, 925, 1000, 1076, 1345, 1480, 1850, 2000, 2152, 2690, 2960, 3700, 4304, 4625, 5380, 6725, 7400, 9250, 9953, 10760, 13450, 14800, 18500, 19906, 21520, 26900, 33625, 37000, 39812, 49765, 53800, 67250, 74000, 79624, 99530, 107600, 134500, 159248, 199060, 248825, 269000, 398120, 497650, 538000, 796240, 995300, 1244125, 1990600, 2488250, 3981200, 4976500, 9953000, 19906000]

約数ペア:

[(1, 19906000), (2, 9953000), (4, 4976500), (5, 3981200), (8, 2488250), (10, 1990600), (16, 1244125), (20, 995300), (25, 796240), (37, 538000), (40, 497650), (50, 398120), (74, 269000), (80, 248825), (100, 199060), (125, 159248), (148, 134500), (185, 107600), (200, 99530), (250, 79624), (269, 74000), (296, 67250), (370, 53800), (400, 49765), (500, 39812), (538, 37000), (592, 33625), (740, 26900), (925, 21520), (1000, 19906), (1076, 18500), (1345, 14800), (1480, 13450), (1850, 10760), (2000, 9953), (2152, 9250), (2690, 7400), (2960, 6725), (3700, 5380), (4304, 4625)]