1388891469

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{911}}^1\times {\mathrm{3821}}^1$

素因数の和:4761

約数の個数: 32

約数和(自身を含む): 2230824960

約数和(自身を除く): 841933491

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 911, 2733, 3821, 6377, 11463, 17309, 19131, 26747, 51927, 72599, 80241, 121163, 217797, 363489, 508193, 1524579, 3480931, 10442793, 24366517, 66137689, 73099551, 198413067, 462963823, 1388891469]

約数ペア:

[(1, 1388891469), (3, 462963823), (7, 198413067), (19, 73099551), (21, 66137689), (57, 24366517), (133, 10442793), (399, 3480931), (911, 1524579), (2733, 508193), (3821, 363489), (6377, 217797), (11463, 121163), (17309, 80241), (19131, 72599), (26747, 51927)]