20978083

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{673}}^1$

素因数の和:814

約数の個数: 16

約数和(自身を含む): 24738496

約数和(自身を除く): 3760413

約数列:

[1, 7, 61, 73, 427, 511, 673, 4453, 4711, 31171, 41053, 49129, 287371, 343903, 2996869, 20978083]

約数ペア:

[(1, 20978083), (7, 2996869), (61, 343903), (73, 287371), (427, 49129), (511, 41053), (673, 31171), (4453, 4711)]