19697965

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1559}}^1$

素因数の和:1609

約数の個数: 24

約数和(自身を含む): 28529280

約数和(自身を除く): 8831315

約数列:

[1, 5, 7, 19, 35, 95, 133, 361, 665, 1559, 1805, 2527, 7795, 10913, 12635, 29621, 54565, 148105, 207347, 562799, 1036735, 2813995, 3939593, 19697965]

約数ペア:

[(1, 19697965), (5, 3939593), (7, 2813995), (19, 1036735), (35, 562799), (95, 207347), (133, 148105), (361, 54565), (665, 29621), (1559, 12635), (1805, 10913), (2527, 7795)]