20213800

素因数分解:

$2^3\times 5^2\times {\mathrm{211}}^1\times {\mathrm{479}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 47318400

約数和(自身を除く): 27104600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 211, 422, 479, 844, 958, 1055, 1688, 1916, 2110, 2395, 3832, 4220, 4790, 5275, 8440, 9580, 10550, 11975, 19160, 21100, 23950, 42200, 47900, 95800, 101069, 202138, 404276, 505345, 808552, 1010690, 2021380, 2526725, 4042760, 5053450, 10106900, 20213800]

約数ペア:

[(1, 20213800), (2, 10106900), (4, 5053450), (5, 4042760), (8, 2526725), (10, 2021380), (20, 1010690), (25, 808552), (40, 505345), (50, 404276), (100, 202138), (200, 101069), (211, 95800), (422, 47900), (479, 42200), (844, 23950), (958, 21100), (1055, 19160), (1688, 11975), (1916, 10550), (2110, 9580), (2395, 8440), (3832, 5275), (4220, 4790)]