21806637

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{5333}}^1$

素因数の和:5412

約数の個数: 16

約数和(自身を含む): 30723840

約数和(自身を除く): 8917203

約数列:

[1, 3, 29, 47, 87, 141, 1363, 4089, 5333, 15999, 154657, 250651, 463971, 751953, 7268879, 21806637]

約数ペア:

[(1, 21806637), (3, 7268879), (29, 751953), (47, 463971), (87, 250651), (141, 154657), (1363, 15999), (4089, 5333)]