21248715

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21143}}^1$

素因数の和:21218

約数の個数: 16

約数和(自身を含む): 34507008

約数和(自身を除く): 13258293

約数列:

[1, 3, 5, 15, 67, 201, 335, 1005, 21143, 63429, 105715, 317145, 1416581, 4249743, 7082905, 21248715]

約数ペア:

[(1, 21248715), (3, 7082905), (5, 4249743), (15, 1416581), (67, 317145), (201, 105715), (335, 63429), (1005, 21143)]