1979600

素因数分解:

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

素因数の和:133

約数の個数: 90

約数和(自身を含む): 5587254

約数和(自身を除く): 3607654

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, 140, 175, 196, 200, 202, 245, 280, 350, 392, 400, 404, 490, 505, 560, 700, 707, 784, 808, 980, 1010, 1225, 1400, 1414, 1616, 1960, 2020, 2450, 2525, 2800, 2828, 3535, 3920, 4040, 4900, 4949, 5050, 5656, 7070, 8080, 9800, 9898, 10100, 11312, 14140, 17675, 19600, 19796, 20200, 24745, 28280, 35350, 39592, 40400, 49490, 56560, 70700, 79184, 98980, 123725, 141400, 197960, 247450, 282800, 395920, 494900, 989800, 1979600]

約数ペア:

[(1, 1979600), (2, 989800), (4, 494900), (5, 395920), (7, 282800), (8, 247450), (10, 197960), (14, 141400), (16, 123725), (20, 98980), (25, 79184), (28, 70700), (35, 56560), (40, 49490), (49, 40400), (50, 39592), (56, 35350), (70, 28280), (80, 24745), (98, 20200), (100, 19796), (101, 19600), (112, 17675), (140, 14140), (175, 11312), (196, 10100), (200, 9898), (202, 9800), (245, 8080), (280, 7070), (350, 5656), (392, 5050), (400, 4949), (404, 4900), (490, 4040), (505, 3920), (560, 3535), (700, 2828), (707, 2800), (784, 2525), (808, 2450), (980, 2020), (1010, 1960), (1225, 1616), (1400, 1414)]