21876399

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15887}}^1$

素因数の和:15916

約数の個数: 20

約数和(自身を含む): 34604064

約数和(自身を除く): 12727665

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15887, 47661, 142983, 270079, 428949, 810237, 1286847, 2430711, 7292133, 21876399]

約数ペア:

[(1, 21876399), (3, 7292133), (9, 2430711), (17, 1286847), (27, 810237), (51, 428949), (81, 270079), (153, 142983), (459, 47661), (1377, 15887)]