77345000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:556

約数の個数: 80

約数和(自身を含む): 187440000

約数和(自身を除く): 110095000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 499, 500, 620, 625, 775, 998, 1000, 1240, 1250, 1550, 1996, 2495, 2500, 3100, 3875, 3992, 4990, 5000, 6200, 7750, 9980, 12475, 15469, 15500, 19375, 19960, 24950, 30938, 31000, 38750, 49900, 61876, 62375, 77345, 77500, 99800, 123752, 124750, 154690, 155000, 249500, 309380, 311875, 386725, 499000, 618760, 623750, 773450, 1247500, 1546900, 1933625, 2495000, 3093800, 3867250, 7734500, 9668125, 15469000, 19336250, 38672500, 77345000]

約数ペア:

[(1, 77345000), (2, 38672500), (4, 19336250), (5, 15469000), (8, 9668125), (10, 7734500), (20, 3867250), (25, 3093800), (31, 2495000), (40, 1933625), (50, 1546900), (62, 1247500), (100, 773450), (124, 623750), (125, 618760), (155, 499000), (200, 386725), (248, 311875), (250, 309380), (310, 249500), (499, 155000), (500, 154690), (620, 124750), (625, 123752), (775, 99800), (998, 77500), (1000, 77345), (1240, 62375), (1250, 61876), (1550, 49900), (1996, 38750), (2495, 31000), (2500, 30938), (3100, 24950), (3875, 19960), (3992, 19375), (4990, 15500), (5000, 15469), (6200, 12475), (7750, 9980)]