21140391

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{5651}}^1$

素因数の和:5726

約数の個数: 16

約数和(自身を含む): 29842560

約数和(自身を除く): 8702169

約数列:

[1, 3, 29, 43, 87, 129, 1247, 3741, 5651, 16953, 163879, 242993, 491637, 728979, 7046797, 21140391]

約数ペア:

[(1, 21140391), (3, 7046797), (29, 728979), (43, 491637), (87, 242993), (129, 163879), (1247, 16953), (3741, 5651)]