20765381

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{433}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 27998208

約数和(自身を除く): 7232827

約数列:

[1, 7, 13, 17, 31, 91, 119, 217, 221, 403, 433, 527, 1547, 2821, 3031, 3689, 5629, 6851, 7361, 13423, 39403, 47957, 51527, 93961, 95693, 174499, 228191, 669851, 1221493, 1597337, 2966483, 20765381]

約数ペア:

[(1, 20765381), (7, 2966483), (13, 1597337), (17, 1221493), (31, 669851), (91, 228191), (119, 174499), (217, 95693), (221, 93961), (403, 51527), (433, 47957), (527, 39403), (1547, 13423), (2821, 7361), (3031, 6851), (3689, 5629)]