19976125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 8328515

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 247, 325, 475, 647, 1235, 1625, 2375, 3235, 6175, 8411, 12293, 16175, 30875, 42055, 61465, 80875, 159809, 210275, 307325, 799045, 1051375, 1536625, 3995225, 19976125]

約数ペア:

[(1, 19976125), (5, 3995225), (13, 1536625), (19, 1051375), (25, 799045), (65, 307325), (95, 210275), (125, 159809), (247, 80875), (325, 61465), (475, 42055), (647, 30875), (1235, 16175), (1625, 12293), (2375, 8411), (3235, 6175)]