20147631

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 11647569

約数列:

[1, 3, 7, 21, 47, 137, 141, 149, 329, 411, 447, 959, 987, 1043, 2877, 3129, 6439, 7003, 19317, 20413, 21009, 45073, 49021, 61239, 135219, 142891, 147063, 428673, 959411, 2878233, 6715877, 20147631]

約数ペア:

[(1, 20147631), (3, 6715877), (7, 2878233), (21, 959411), (47, 428673), (137, 147063), (141, 142891), (149, 135219), (329, 61239), (411, 49021), (447, 45073), (959, 21009), (987, 20413), (1043, 19317), (2877, 7003), (3129, 6439)]