21028100

素因数分解:

$2^2\times 5^2\times {\mathrm{439}}^1\times {\mathrm{479}}^1$

素因数の和:932

約数の個数: 36

約数和(自身を含む): 45830400

約数和(自身を除く): 24802300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 439, 479, 878, 958, 1756, 1916, 2195, 2395, 4390, 4790, 8780, 9580, 10975, 11975, 21950, 23950, 43900, 47900, 210281, 420562, 841124, 1051405, 2102810, 4205620, 5257025, 10514050, 21028100]

約数ペア:

[(1, 21028100), (2, 10514050), (4, 5257025), (5, 4205620), (10, 2102810), (20, 1051405), (25, 841124), (50, 420562), (100, 210281), (439, 47900), (479, 43900), (878, 23950), (958, 21950), (1756, 11975), (1916, 10975), (2195, 9580), (2395, 8780), (4390, 4790)]