21020619

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{1181}}^1$

素因数の和:1550

約数の個数: 16

約数和(自身を含む): 29786400

約数和(自身を除く): 8765781

約数列:

[1, 3, 17, 51, 349, 1047, 1181, 3543, 5933, 17799, 20077, 60231, 412169, 1236507, 7006873, 21020619]

約数ペア:

[(1, 21020619), (3, 7006873), (17, 1236507), (51, 412169), (349, 60231), (1047, 20077), (1181, 17799), (3543, 5933)]