21810175

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 28458000

約数和(自身を除く): 6647825

約数列:

[1, 5, 25, 29, 67, 145, 335, 449, 725, 1675, 1943, 2245, 9715, 11225, 13021, 30083, 48575, 65105, 150415, 325525, 752075, 872407, 4362035, 21810175]

約数ペア:

[(1, 21810175), (5, 4362035), (25, 872407), (29, 752075), (67, 325525), (145, 150415), (335, 65105), (449, 48575), (725, 30083), (1675, 13021), (1943, 11225), (2245, 9715)]