21095860

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9677}}^1$

素因数の和:9795

約数の個数: 24

約数和(自身を含む): 44712360

約数和(自身を除く): 23616500

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9677, 19354, 38708, 48385, 96770, 193540, 1054793, 2109586, 4219172, 5273965, 10547930, 21095860]

約数ペア:

[(1, 21095860), (2, 10547930), (4, 5273965), (5, 4219172), (10, 2109586), (20, 1054793), (109, 193540), (218, 96770), (436, 48385), (545, 38708), (1090, 19354), (2180, 9677)]