21379897

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{16333}}^1$

素因数の和:16368

約数の個数: 16

約数和(自身を含む): 28225152

約数和(自身を除く): 6845255

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 16333, 114331, 179663, 277661, 1257641, 1943627, 3054271, 21379897]

約数ペア:

[(1, 21379897), (7, 3054271), (11, 1943627), (17, 1257641), (77, 277661), (119, 179663), (187, 114331), (1309, 16333)]