12499900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{2551}}^1$

素因数の和:2579

約数の個数: 54

約数和(自身を含む): 31565688

約数和(自身を除く): 19065788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 2551, 4900, 5102, 10204, 12755, 17857, 25510, 35714, 51020, 63775, 71428, 89285, 124999, 127550, 178570, 249998, 255100, 357140, 446425, 499996, 624995, 892850, 1249990, 1785700, 2499980, 3124975, 6249950, 12499900]

約数ペア:

[(1, 12499900), (2, 6249950), (4, 3124975), (5, 2499980), (7, 1785700), (10, 1249990), (14, 892850), (20, 624995), (25, 499996), (28, 446425), (35, 357140), (49, 255100), (50, 249998), (70, 178570), (98, 127550), (100, 124999), (140, 89285), (175, 71428), (196, 63775), (245, 51020), (350, 35714), (490, 25510), (700, 17857), (980, 12755), (1225, 10204), (2450, 5102), (2551, 4900)]