21744515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4993}}^1$

素因数の和:5078

約数の個数: 16

約数和(自身を含む): 28525728

約数和(自身を除く): 6781213

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4993, 24965, 64909, 324545, 334531, 1672655, 4348903, 21744515]

約数ペア:

[(1, 21744515), (5, 4348903), (13, 1672655), (65, 334531), (67, 324545), (335, 64909), (871, 24965), (4355, 4993)]