12974000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{499}}^1$

素因数の和:535

約数の個数: 80

約数和(自身を含む): 33852000

約数和(自身を除く): 20878000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 499, 500, 520, 650, 998, 1000, 1040, 1300, 1625, 1996, 2000, 2495, 2600, 3250, 3992, 4990, 5200, 6487, 6500, 7984, 9980, 12475, 12974, 13000, 19960, 24950, 25948, 26000, 32435, 39920, 49900, 51896, 62375, 64870, 99800, 103792, 124750, 129740, 162175, 199600, 249500, 259480, 324350, 499000, 518960, 648700, 810875, 998000, 1297400, 1621750, 2594800, 3243500, 6487000, 12974000]

約数ペア:

[(1, 12974000), (2, 6487000), (4, 3243500), (5, 2594800), (8, 1621750), (10, 1297400), (13, 998000), (16, 810875), (20, 648700), (25, 518960), (26, 499000), (40, 324350), (50, 259480), (52, 249500), (65, 199600), (80, 162175), (100, 129740), (104, 124750), (125, 103792), (130, 99800), (200, 64870), (208, 62375), (250, 51896), (260, 49900), (325, 39920), (400, 32435), (499, 26000), (500, 25948), (520, 24950), (650, 19960), (998, 13000), (1000, 12974), (1040, 12475), (1300, 9980), (1625, 7984), (1996, 6500), (2000, 6487), (2495, 5200), (2600, 4990), (3250, 3992)]