21457909

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 24087744

約数和(自身を除く): 2629835

約数列:

[1, 11, 61, 113, 283, 671, 1243, 3113, 6893, 17263, 31979, 75823, 189893, 351769, 1950719, 21457909]

約数ペア:

[(1, 21457909), (11, 1950719), (61, 351769), (113, 189893), (283, 75823), (671, 31979), (1243, 17263), (3113, 6893)]