20312188

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{4027}}^1$

素因数の和:4141

約数の個数: 24

約数和(自身を含む): 38684912

約数和(自身を除く): 18372724

約数列:

[1, 2, 4, 13, 26, 52, 97, 194, 388, 1261, 2522, 4027, 5044, 8054, 16108, 52351, 104702, 209404, 390619, 781238, 1562476, 5078047, 10156094, 20312188]

約数ペア:

[(1, 20312188), (2, 10156094), (4, 5078047), (13, 1562476), (26, 781238), (52, 390619), (97, 209404), (194, 104702), (388, 52351), (1261, 16108), (2522, 8054), (4027, 5044)]