20653171

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{743}}^1$

素因数の和:799

約数の個数: 24

約数和(自身を含む): 27212544

約数和(自身を除く): 6559373

約数列:

[1, 7, 11, 19, 77, 133, 209, 361, 743, 1463, 2527, 3971, 5201, 8173, 14117, 27797, 57211, 98819, 155287, 268223, 1087009, 1877561, 2950453, 20653171]

約数ペア:

[(1, 20653171), (7, 2950453), (11, 1877561), (19, 1087009), (77, 268223), (133, 155287), (209, 98819), (361, 57211), (743, 27797), (1463, 14117), (2527, 8173), (3971, 5201)]