21346815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11959}}^1$

素因数の和:11991

約数の個数: 32

約数和(自身を含む): 41333760

約数和(自身を除く): 19986945

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11959, 35877, 59795, 83713, 179385, 203303, 251139, 418565, 609909, 1016515, 1255695, 1423121, 3049545, 4269363, 7115605, 21346815]

約数ペア:

[(1, 21346815), (3, 7115605), (5, 4269363), (7, 3049545), (15, 1423121), (17, 1255695), (21, 1016515), (35, 609909), (51, 418565), (85, 251139), (105, 203303), (119, 179385), (255, 83713), (357, 59795), (595, 35877), (1785, 11959)]