19796000

素因数分解:

$2^5\times 5^3\times 7^2\times {\mathrm{101}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 57139992

約数和(自身を除く): 37343992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 101, 112, 125, 140, 160, 175, 196, 200, 202, 224, 245, 250, 280, 350, 392, 400, 404, 490, 500, 505, 560, 700, 707, 784, 800, 808, 875, 980, 1000, 1010, 1120, 1225, 1400, 1414, 1568, 1616, 1750, 1960, 2000, 2020, 2450, 2525, 2800, 2828, 3232, 3500, 3535, 3920, 4000, 4040, 4900, 4949, 5050, 5600, 5656, 6125, 7000, 7070, 7840, 8080, 9800, 9898, 10100, 11312, 12250, 12625, 14000, 14140, 16160, 17675, 19600, 19796, 20200, 22624, 24500, 24745, 25250, 28000, 28280, 35350, 39200, 39592, 40400, 49000, 49490, 50500, 56560, 70700, 79184, 80800, 88375, 98000, 98980, 101000, 113120, 123725, 141400, 158368, 176750, 196000, 197960, 202000, 247450, 282800, 353500, 395920, 404000, 494900, 565600, 618625, 707000, 791840, 989800, 1237250, 1414000, 1979600, 2474500, 2828000, 3959200, 4949000, 9898000, 19796000]

約数ペア:

[(1, 19796000), (2, 9898000), (4, 4949000), (5, 3959200), (7, 2828000), (8, 2474500), (10, 1979600), (14, 1414000), (16, 1237250), (20, 989800), (25, 791840), (28, 707000), (32, 618625), (35, 565600), (40, 494900), (49, 404000), (50, 395920), (56, 353500), (70, 282800), (80, 247450), (98, 202000), (100, 197960), (101, 196000), (112, 176750), (125, 158368), (140, 141400), (160, 123725), (175, 113120), (196, 101000), (200, 98980), (202, 98000), (224, 88375), (245, 80800), (250, 79184), (280, 70700), (350, 56560), (392, 50500), (400, 49490), (404, 49000), (490, 40400), (500, 39592), (505, 39200), (560, 35350), (700, 28280), (707, 28000), (784, 25250), (800, 24745), (808, 24500), (875, 22624), (980, 20200), (1000, 19796), (1010, 19600), (1120, 17675), (1225, 16160), (1400, 14140), (1414, 14000), (1568, 12625), (1616, 12250), (1750, 11312), (1960, 10100), (2000, 9898), (2020, 9800), (2450, 8080), (2525, 7840), (2800, 7070), (2828, 7000), (3232, 6125), (3500, 5656), (3535, 5600), (3920, 5050), (4000, 4949), (4040, 4900)]