20623120

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5261}}^1$

素因数の和:5288

約数の個数: 60

約数和(自身を含む): 55787724

約数和(自身を除く): 35164604

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5261, 10522, 21044, 26305, 36827, 42088, 52610, 73654, 84176, 105220, 147308, 184135, 210440, 257789, 294616, 368270, 420880, 515578, 589232, 736540, 1031156, 1288945, 1473080, 2062312, 2577890, 2946160, 4124624, 5155780, 10311560, 20623120]

約数ペア:

[(1, 20623120), (2, 10311560), (4, 5155780), (5, 4124624), (7, 2946160), (8, 2577890), (10, 2062312), (14, 1473080), (16, 1288945), (20, 1031156), (28, 736540), (35, 589232), (40, 515578), (49, 420880), (56, 368270), (70, 294616), (80, 257789), (98, 210440), (112, 184135), (140, 147308), (196, 105220), (245, 84176), (280, 73654), (392, 52610), (490, 42088), (560, 36827), (784, 26305), (980, 21044), (1960, 10522), (3920, 5261)]