25089920

素因数分解:

$2^7\times 5^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 60588000

約数和(自身を除く): 35498080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 199, 320, 394, 398, 640, 788, 796, 985, 995, 1576, 1592, 1970, 1990, 3152, 3184, 3940, 3980, 6304, 6368, 7880, 7960, 12608, 12736, 15760, 15920, 25216, 25472, 31520, 31840, 39203, 63040, 63680, 78406, 126080, 127360, 156812, 196015, 313624, 392030, 627248, 784060, 1254496, 1568120, 2508992, 3136240, 5017984, 6272480, 12544960, 25089920]

約数ペア:

[(1, 25089920), (2, 12544960), (4, 6272480), (5, 5017984), (8, 3136240), (10, 2508992), (16, 1568120), (20, 1254496), (32, 784060), (40, 627248), (64, 392030), (80, 313624), (128, 196015), (160, 156812), (197, 127360), (199, 126080), (320, 78406), (394, 63680), (398, 63040), (640, 39203), (788, 31840), (796, 31520), (985, 25472), (995, 25216), (1576, 15920), (1592, 15760), (1970, 12736), (1990, 12608), (3152, 7960), (3184, 7880), (3940, 6368), (3980, 6304)]