21261315

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61627}}^1$

素因数の和:61658

約数の個数: 16

約数和(自身を含む): 35497728

約数和(自身を除く): 14236413

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61627, 184881, 308135, 924405, 1417421, 4252263, 7087105, 21261315]

約数ペア:

[(1, 21261315), (3, 7087105), (5, 4252263), (15, 1417421), (23, 924405), (69, 308135), (115, 184881), (345, 61627)]