21385317

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{6359}}^1$

素因数の和:6440

約数の個数: 16

約数和(自身を含む): 30528000

約数和(自身を除く): 9142683

約数列:

[1, 3, 19, 57, 59, 177, 1121, 3363, 6359, 19077, 120821, 362463, 375181, 1125543, 7128439, 21385317]

約数ペア:

[(1, 21385317), (3, 7128439), (19, 1125543), (57, 375181), (59, 362463), (177, 120821), (1121, 19077), (3363, 6359)]