21617727

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{557}}^1\times {\mathrm{761}}^1$

素因数の和:1338

約数の個数: 16

約数和(自身を含む): 30614112

約数和(自身を除く): 8996385

約数列:

[1, 3, 17, 51, 557, 761, 1671, 2283, 9469, 12937, 28407, 38811, 423877, 1271631, 7205909, 21617727]

約数ペア:

[(1, 21617727), (3, 7205909), (17, 1271631), (51, 423877), (557, 38811), (761, 28407), (1671, 12937), (2283, 9469)]