20257857

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13163}}^1$

素因数の和:13194

約数の個数: 20

約数和(自身を含む): 31856880

約数和(自身を除く): 11599023

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13163, 39489, 118467, 250097, 355401, 750291, 1066203, 2250873, 6752619, 20257857]

約数ペア:

[(1, 20257857), (3, 6752619), (9, 2250873), (19, 1066203), (27, 750291), (57, 355401), (81, 250097), (171, 118467), (513, 39489), (1539, 13163)]