639295527

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{4517}}^1$

素因数の和:4743

約数の個数: 32

約数和(自身を含む): 971550720

約数和(自身を除く): 332255193

約数列:

[1, 3, 13, 19, 39, 57, 191, 247, 573, 741, 2483, 3629, 4517, 7449, 10887, 13551, 47177, 58721, 85823, 141531, 176163, 257469, 862747, 1115699, 2588241, 3347097, 11215711, 16392193, 33647133, 49176579, 213098509, 639295527]

約数ペア:

[(1, 639295527), (3, 213098509), (13, 49176579), (19, 33647133), (39, 16392193), (57, 11215711), (191, 3347097), (247, 2588241), (573, 1115699), (741, 862747), (2483, 257469), (3629, 176163), (4517, 141531), (7449, 85823), (10887, 58721), (13551, 47177)]