21451605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{204301}}^1$

素因数の和:204316

約数の個数: 16

約数和(自身を含む): 39225984

約数和(自身を除く): 17774379

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 204301, 612903, 1021505, 1430107, 3064515, 4290321, 7150535, 21451605]

約数ペア:

[(1, 21451605), (3, 7150535), (5, 4290321), (7, 3064515), (15, 1430107), (21, 1021505), (35, 612903), (105, 204301)]