21238400

素因数分解:

$2^7\times 5^2\times {\mathrm{6637}}^1$

素因数の和:6661

約数の個数: 48

約数和(自身を含む): 52473390

約数和(自身を除く): 31234990

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6637, 13274, 26548, 33185, 53096, 66370, 106192, 132740, 165925, 212384, 265480, 331850, 424768, 530960, 663700, 849536, 1061920, 1327400, 2123840, 2654800, 4247680, 5309600, 10619200, 21238400]

約数ペア:

[(1, 21238400), (2, 10619200), (4, 5309600), (5, 4247680), (8, 2654800), (10, 2123840), (16, 1327400), (20, 1061920), (25, 849536), (32, 663700), (40, 530960), (50, 424768), (64, 331850), (80, 265480), (100, 212384), (128, 165925), (160, 132740), (200, 106192), (320, 66370), (400, 53096), (640, 33185), (800, 26548), (1600, 13274), (3200, 6637)]