21057029

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4219}}^1$

素因数の和:4280

約数の個数: 16

約数和(自身を含む): 25927680

約数和(自身を除く): 4870651

約数列:

[1, 7, 23, 31, 161, 217, 713, 4219, 4991, 29533, 97037, 130789, 679259, 915523, 3008147, 21057029]

約数ペア:

[(1, 21057029), (7, 3008147), (23, 915523), (31, 679259), (161, 130789), (217, 97037), (713, 29533), (4219, 4991)]