21494252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{1471}}^1$

素因数の和:1769

約数の個数: 24

約数和(自身を含む): 40680192

約数和(自身を除く): 19185940

約数列:

[1, 2, 4, 13, 26, 52, 281, 562, 1124, 1471, 2942, 3653, 5884, 7306, 14612, 19123, 38246, 76492, 413351, 826702, 1653404, 5373563, 10747126, 21494252]

約数ペア:

[(1, 21494252), (2, 10747126), (4, 5373563), (13, 1653404), (26, 826702), (52, 413351), (281, 76492), (562, 38246), (1124, 19123), (1471, 14612), (2942, 7306), (3653, 5884)]