20522720

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4423}}^1$

素因数の和:4467

約数の個数: 48

約数和(自身を含む): 50168160

約数和(自身を除く): 29645440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4423, 4640, 8846, 17692, 22115, 35384, 44230, 70768, 88460, 128267, 141536, 176920, 256534, 353840, 513068, 641335, 707680, 1026136, 1282670, 2052272, 2565340, 4104544, 5130680, 10261360, 20522720]

約数ペア:

[(1, 20522720), (2, 10261360), (4, 5130680), (5, 4104544), (8, 2565340), (10, 2052272), (16, 1282670), (20, 1026136), (29, 707680), (32, 641335), (40, 513068), (58, 353840), (80, 256534), (116, 176920), (145, 141536), (160, 128267), (232, 88460), (290, 70768), (464, 44230), (580, 35384), (928, 22115), (1160, 17692), (2320, 8846), (4423, 4640)]