21497763

素因数分解:

$3^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{1033}}^1$

素因数の和:2034

約数の個数: 16

約数和(自身を含む): 32823296

約数和(自身を除く): 11325533

約数列:

[1, 3, 7, 21, 991, 1033, 2973, 3099, 6937, 7231, 20811, 21693, 1023703, 3071109, 7165921, 21497763]

約数ペア:

[(1, 21497763), (3, 7165921), (7, 3071109), (21, 1023703), (991, 21693), (1033, 20811), (2973, 7231), (3099, 6937)]