21391661

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:604

約数の個数: 16

約数和(自身を含む): 23639040

約数和(自身を除く): 2247379

約数列:

[1, 17, 37, 71, 479, 629, 1207, 2627, 8143, 17723, 34009, 44659, 301291, 578153, 1258333, 21391661]

約数ペア:

[(1, 21391661), (17, 1258333), (37, 578153), (71, 301291), (479, 44659), (629, 34009), (1207, 17723), (2627, 8143)]