21407907

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{1459}}^1$

素因数の和:1602

約数の個数: 16

約数和(自身を含む): 29386880

約数和(自身を除く): 7978973

約数列:

[1, 3, 67, 73, 201, 219, 1459, 4377, 4891, 14673, 97753, 106507, 293259, 319521, 7135969, 21407907]

約数ペア:

[(1, 21407907), (3, 7135969), (67, 319521), (73, 293259), (201, 106507), (219, 97753), (1459, 14673), (4377, 4891)]