1631721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 2759680

約数和(自身を除く): 1127959

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 139, 273, 301, 417, 559, 903, 973, 1677, 1807, 2919, 3913, 5421, 5977, 11739, 12649, 17931, 37947, 41839, 77701, 125517, 233103, 543907, 1631721]

約数ペア:

[(1, 1631721), (3, 543907), (7, 233103), (13, 125517), (21, 77701), (39, 41839), (43, 37947), (91, 17931), (129, 12649), (139, 11739), (273, 5977), (301, 5421), (417, 3913), (559, 2919), (903, 1807), (973, 1677)]