21320695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{10477}}^1$

素因数の和:10530

約数の個数: 16

約数和(自身を含む): 28667808

約数和(自身を除く): 7347113

約数列:

[1, 5, 11, 37, 55, 185, 407, 2035, 10477, 52385, 115247, 387649, 576235, 1938245, 4264139, 21320695]

約数ペア:

[(1, 21320695), (5, 4264139), (11, 1938245), (37, 576235), (55, 387649), (185, 115247), (407, 52385), (2035, 10477)]