20804000

素因数分解:

$2^5\times 5^3\times 7^1\times {\mathrm{743}}^1$

素因数の和:775

約数の個数: 96

約数和(自身を含む): 58496256

約数和(自身を除く): 37692256

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 160, 175, 200, 224, 250, 280, 350, 400, 500, 560, 700, 743, 800, 875, 1000, 1120, 1400, 1486, 1750, 2000, 2800, 2972, 3500, 3715, 4000, 5201, 5600, 5944, 7000, 7430, 10402, 11888, 14000, 14860, 18575, 20804, 23776, 26005, 28000, 29720, 37150, 41608, 52010, 59440, 74300, 83216, 92875, 104020, 118880, 130025, 148600, 166432, 185750, 208040, 260050, 297200, 371500, 416080, 520100, 594400, 650125, 743000, 832160, 1040200, 1300250, 1486000, 2080400, 2600500, 2972000, 4160800, 5201000, 10402000, 20804000]

約数ペア:

[(1, 20804000), (2, 10402000), (4, 5201000), (5, 4160800), (7, 2972000), (8, 2600500), (10, 2080400), (14, 1486000), (16, 1300250), (20, 1040200), (25, 832160), (28, 743000), (32, 650125), (35, 594400), (40, 520100), (50, 416080), (56, 371500), (70, 297200), (80, 260050), (100, 208040), (112, 185750), (125, 166432), (140, 148600), (160, 130025), (175, 118880), (200, 104020), (224, 92875), (250, 83216), (280, 74300), (350, 59440), (400, 52010), (500, 41608), (560, 37150), (700, 29720), (743, 28000), (800, 26005), (875, 23776), (1000, 20804), (1120, 18575), (1400, 14860), (1486, 14000), (1750, 11888), (2000, 10402), (2800, 7430), (2972, 7000), (3500, 5944), (3715, 5600), (4000, 5201)]