388640247

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{751}}^1$

素因数の和:983

約数の個数: 32

約数和(自身を含む): 560931840

約数和(自身を除く): 172291593

約数列:

[1, 3, 17, 51, 73, 139, 219, 417, 751, 1241, 2253, 2363, 3723, 7089, 10147, 12767, 30441, 38301, 54823, 104389, 164469, 172499, 313167, 517497, 931991, 1774613, 2795973, 5323839, 7620397, 22861191, 129546749, 388640247]

約数ペア:

[(1, 388640247), (3, 129546749), (17, 22861191), (51, 7620397), (73, 5323839), (139, 2795973), (219, 1774613), (417, 931991), (751, 517497), (1241, 313167), (2253, 172499), (2363, 164469), (3723, 104389), (7089, 54823), (10147, 38301), (12767, 30441)]