21809312

素因数分解:

$2^5\times 7^3\times {\mathrm{1987}}^1$

素因数の和:2018

約数の個数: 48

約数和(自身を含む): 50097600

約数和(自身を除く): 28288288

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 343, 392, 686, 784, 1372, 1568, 1987, 2744, 3974, 5488, 7948, 10976, 13909, 15896, 27818, 31792, 55636, 63584, 97363, 111272, 194726, 222544, 389452, 445088, 681541, 778904, 1363082, 1557808, 2726164, 3115616, 5452328, 10904656, 21809312]

約数ペア:

[(1, 21809312), (2, 10904656), (4, 5452328), (7, 3115616), (8, 2726164), (14, 1557808), (16, 1363082), (28, 778904), (32, 681541), (49, 445088), (56, 389452), (98, 222544), (112, 194726), (196, 111272), (224, 97363), (343, 63584), (392, 55636), (686, 31792), (784, 27818), (1372, 15896), (1568, 13909), (1987, 10976), (2744, 7948), (3974, 5488)]