20178639

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19163}}^1$

素因数の和:19188

約数の個数: 20

約数和(自身を含む): 32463816

約数和(自身を除く): 12285177

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19163, 57489, 172467, 249119, 517401, 747357, 1552203, 2242071, 6726213, 20178639]

約数ペア:

[(1, 20178639), (3, 6726213), (9, 2242071), (13, 1552203), (27, 747357), (39, 517401), (81, 249119), (117, 172467), (351, 57489), (1053, 19163)]