1388556820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{57331}}^1$

素因数の和:57520

約数の個数: 48

約数和(自身を含む): 3351858048

約数和(自身を除く): 1963301228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 865, 1211, 1730, 2422, 3460, 4844, 6055, 12110, 24220, 57331, 114662, 229324, 286655, 401317, 573310, 802634, 1146620, 1605268, 2006585, 4013170, 8026340, 9918263, 19836526, 39673052, 49591315, 69427841, 99182630, 138855682, 198365260, 277711364, 347139205, 694278410, 1388556820]

約数ペア:

[(1, 1388556820), (2, 694278410), (4, 347139205), (5, 277711364), (7, 198365260), (10, 138855682), (14, 99182630), (20, 69427841), (28, 49591315), (35, 39673052), (70, 19836526), (140, 9918263), (173, 8026340), (346, 4013170), (692, 2006585), (865, 1605268), (1211, 1146620), (1730, 802634), (2422, 573310), (3460, 401317), (4844, 286655), (6055, 229324), (12110, 114662), (24220, 57331)]