21059900

素因数分解:

$2^2\times 5^2\times {\mathrm{210599}}^1$

素因数の和:210613

約数の個数: 18

約数和(自身を含む): 45700200

約数和(自身を除く): 24640300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210599, 421198, 842396, 1052995, 2105990, 4211980, 5264975, 10529950, 21059900]

約数ペア:

[(1, 21059900), (2, 10529950), (4, 5264975), (5, 4211980), (10, 2105990), (20, 1052995), (25, 842396), (50, 421198), (100, 210599)]