20000818

素因数分解:

$2^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:1017

約数の個数: 16

約数和(自身を含む): 30580704

約数和(自身を除く): 10579886

約数列:

[1, 2, 97, 131, 194, 262, 787, 1574, 12707, 25414, 76339, 103097, 152678, 206194, 10000409, 20000818]

約数ペア:

[(1, 20000818), (2, 10000409), (97, 206194), (131, 152678), (194, 103097), (262, 76339), (787, 25414), (1574, 12707)]