21143175

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9721}}^1$

素因数の和:9763

約数の個数: 24

約数和(自身を含む): 36165840

約数和(自身を除く): 15022665

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9721, 29163, 48605, 145815, 243025, 281909, 729075, 845727, 1409545, 4228635, 7047725, 21143175]

約数ペア:

[(1, 21143175), (3, 7047725), (5, 4228635), (15, 1409545), (25, 845727), (29, 729075), (75, 281909), (87, 243025), (145, 145815), (435, 48605), (725, 29163), (2175, 9721)]