21055113

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4967}}^1$

素因数の和:5133

約数の個数: 16

約数和(自身を含む): 31397760

約数和(自身を除く): 10342647

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4967, 14901, 44703, 134109, 779819, 2339457, 7018371, 21055113]

約数ペア:

[(1, 21055113), (3, 7018371), (9, 2339457), (27, 779819), (157, 134109), (471, 44703), (1413, 14901), (4239, 4967)]