20041637

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1$

素因数の和:166

約数の個数: 36

約数和(自身を含む): 27102816

約数和(自身を除く): 7061179

約数列:

[1, 7, 11, 19, 49, 77, 103, 133, 209, 361, 539, 721, 931, 1133, 1463, 1957, 2527, 3971, 5047, 7931, 10241, 13699, 17689, 21527, 27797, 37183, 55517, 95893, 150689, 194579, 260281, 409013, 1054823, 1821967, 2863091, 20041637]

約数ペア:

[(1, 20041637), (7, 2863091), (11, 1821967), (19, 1054823), (49, 409013), (77, 260281), (103, 194579), (133, 150689), (209, 95893), (361, 55517), (539, 37183), (721, 27797), (931, 21527), (1133, 17689), (1463, 13699), (1957, 10241), (2527, 7931), (3971, 5047)]