21513730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{307339}}^1$

素因数の和:307353

約数の個数: 16

約数和(自身を含む): 44256960

約数和(自身を除く): 22743230

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 307339, 614678, 1536695, 2151373, 3073390, 4302746, 10756865, 21513730]

約数ペア:

[(1, 21513730), (2, 10756865), (5, 4302746), (7, 3073390), (10, 2151373), (14, 1536695), (35, 614678), (70, 307339)]