21197505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{201881}}^1$

素因数の和:201896

約数の個数: 16

約数和(自身を含む): 38761344

約数和(自身を除く): 17563839

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 201881, 605643, 1009405, 1413167, 3028215, 4239501, 7065835, 21197505]

約数ペア:

[(1, 21197505), (3, 7065835), (5, 4239501), (7, 3028215), (15, 1413167), (21, 1009405), (35, 605643), (105, 201881)]