21470337

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20047}}^1$

素因数の和:20077

約数の個数: 24

約数和(自身を含む): 37529856

約数和(自身を除く): 16059519

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20047, 60141, 140329, 180423, 340799, 420987, 1022397, 1262961, 2385593, 3067191, 7156779, 21470337]

約数ペア:

[(1, 21470337), (3, 7156779), (7, 3067191), (9, 2385593), (17, 1262961), (21, 1022397), (51, 420987), (63, 340799), (119, 180423), (153, 140329), (357, 60141), (1071, 20047)]