641459

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:99

約数の個数: 24

約数和(自身を含む): 861840

約数和(自身を除く): 220381

約数列:

[1, 7, 13, 19, 49, 53, 91, 133, 247, 371, 637, 689, 931, 1007, 1729, 2597, 4823, 7049, 12103, 13091, 33761, 49343, 91637, 641459]

約数ペア:

[(1, 641459), (7, 91637), (13, 49343), (19, 33761), (49, 13091), (53, 12103), (91, 7049), (133, 4823), (247, 2597), (371, 1729), (637, 1007), (689, 931)]