18826220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4637}}^1$

素因数の和:4682

約数の個数: 48

約数和(自身を含む): 46751040

約数和(自身を除く): 27924820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4637, 9274, 18548, 23185, 32459, 46370, 64918, 92740, 129836, 134473, 162295, 268946, 324590, 537892, 649180, 672365, 941311, 1344730, 1882622, 2689460, 3765244, 4706555, 9413110, 18826220]

約数ペア:

[(1, 18826220), (2, 9413110), (4, 4706555), (5, 3765244), (7, 2689460), (10, 1882622), (14, 1344730), (20, 941311), (28, 672365), (29, 649180), (35, 537892), (58, 324590), (70, 268946), (116, 162295), (140, 134473), (145, 129836), (203, 92740), (290, 64918), (406, 46370), (580, 32459), (812, 23185), (1015, 18548), (2030, 9274), (4060, 4637)]