21289270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125231}}^1$

素因数の和:125255

約数の個数: 16

約数和(自身を含む): 40575168

約数和(自身を除く): 19285898

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125231, 250462, 626155, 1252310, 2128927, 4257854, 10644635, 21289270]

約数ペア:

[(1, 21289270), (2, 10644635), (5, 4257854), (10, 2128927), (17, 1252310), (34, 626155), (85, 250462), (170, 125231)]