21450787

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 23721120

約数和(自身を除く): 2270333

約数列:

[1, 17, 37, 67, 509, 629, 1139, 2479, 8653, 18833, 34103, 42143, 320161, 579751, 1261811, 21450787]

約数ペア:

[(1, 21450787), (17, 1261811), (37, 579751), (67, 320161), (509, 42143), (629, 34103), (1139, 18833), (2479, 8653)]