21977151

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7529}}^1$

素因数の和:7678

約数の個数: 16

約数和(自身を含む): 33734400

約数和(自身を除く): 11757249

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 7529, 22587, 52703, 158109, 1046531, 3139593, 7325717, 21977151]

約数ペア:

[(1, 21977151), (3, 7325717), (7, 3139593), (21, 1046531), (139, 158109), (417, 52703), (973, 22587), (2919, 7529)]