20897645

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{311}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 25608960

約数和(自身を除く): 4711315

約数列:

[1, 5, 89, 151, 311, 445, 755, 1555, 13439, 27679, 46961, 67195, 138395, 234805, 4179529, 20897645]

約数ペア:

[(1, 20897645), (5, 4179529), (89, 234805), (151, 138395), (311, 67195), (445, 46961), (755, 27679), (1555, 13439)]