16990720

素因数分解:

$2^9\times 5^1\times {\mathrm{6637}}^1$

素因数の和:6660

約数の個数: 40

約数和(自身を含む): 40744044

約数和(自身を除く): 23753324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 6637, 13274, 26548, 33185, 53096, 66370, 106192, 132740, 212384, 265480, 424768, 530960, 849536, 1061920, 1699072, 2123840, 3398144, 4247680, 8495360, 16990720]

約数ペア:

[(1, 16990720), (2, 8495360), (4, 4247680), (5, 3398144), (8, 2123840), (10, 1699072), (16, 1061920), (20, 849536), (32, 530960), (40, 424768), (64, 265480), (80, 212384), (128, 132740), (160, 106192), (256, 66370), (320, 53096), (512, 33185), (640, 26548), (1280, 13274), (2560, 6637)]