49490000

素因数分解:

$2^4\times 5^4\times 7^2\times {\mathrm{101}}^1$

素因数の和:143

約数の個数: 150

約数和(自身を含む): 140762754

約数和(自身を除く): 91272754

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 101, 112, 125, 140, 175, 196, 200, 202, 245, 250, 280, 350, 392, 400, 404, 490, 500, 505, 560, 625, 700, 707, 784, 808, 875, 980, 1000, 1010, 1225, 1250, 1400, 1414, 1616, 1750, 1960, 2000, 2020, 2450, 2500, 2525, 2800, 2828, 3500, 3535, 3920, 4040, 4375, 4900, 4949, 5000, 5050, 5656, 6125, 7000, 7070, 8080, 8750, 9800, 9898, 10000, 10100, 11312, 12250, 12625, 14000, 14140, 17500, 17675, 19600, 19796, 20200, 24500, 24745, 25250, 28280, 30625, 35000, 35350, 39592, 40400, 49000, 49490, 50500, 56560, 61250, 63125, 70000, 70700, 79184, 88375, 98000, 98980, 101000, 122500, 123725, 126250, 141400, 176750, 197960, 202000, 245000, 247450, 252500, 282800, 353500, 395920, 441875, 490000, 494900, 505000, 618625, 707000, 883750, 989800, 1010000, 1237250, 1414000, 1767500, 1979600, 2474500, 3093125, 3535000, 4949000, 6186250, 7070000, 9898000, 12372500, 24745000, 49490000]

約数ペア:

[(1, 49490000), (2, 24745000), (4, 12372500), (5, 9898000), (7, 7070000), (8, 6186250), (10, 4949000), (14, 3535000), (16, 3093125), (20, 2474500), (25, 1979600), (28, 1767500), (35, 1414000), (40, 1237250), (49, 1010000), (50, 989800), (56, 883750), (70, 707000), (80, 618625), (98, 505000), (100, 494900), (101, 490000), (112, 441875), (125, 395920), (140, 353500), (175, 282800), (196, 252500), (200, 247450), (202, 245000), (245, 202000), (250, 197960), (280, 176750), (350, 141400), (392, 126250), (400, 123725), (404, 122500), (490, 101000), (500, 98980), (505, 98000), (560, 88375), (625, 79184), (700, 70700), (707, 70000), (784, 63125), (808, 61250), (875, 56560), (980, 50500), (1000, 49490), (1010, 49000), (1225, 40400), (1250, 39592), (1400, 35350), (1414, 35000), (1616, 30625), (1750, 28280), (1960, 25250), (2000, 24745), (2020, 24500), (2450, 20200), (2500, 19796), (2525, 19600), (2800, 17675), (2828, 17500), (3500, 14140), (3535, 14000), (3920, 12625), (4040, 12250), (4375, 11312), (4900, 10100), (4949, 10000), (5000, 9898), (5050, 9800), (5656, 8750), (6125, 8080), (7000, 7070)]