21208100

素因数分解:

$2^2\times 5^2\times {\mathrm{212081}}^1$

素因数の和:212095

約数の個数: 18

約数和(自身を含む): 46021794

約数和(自身を除く): 24813694

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 212081, 424162, 848324, 1060405, 2120810, 4241620, 5302025, 10604050, 21208100]

約数ペア:

[(1, 21208100), (2, 10604050), (4, 5302025), (5, 4241620), (10, 2120810), (20, 1060405), (25, 848324), (50, 424162), (100, 212081)]