21000565418

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{18987853}}^1$

素因数の和:18987941

約数の個数: 16

約数和(自身を含む): 36456679680

約数和(自身を除く): 15456114262

約数列:

[1, 2, 7, 14, 79, 158, 553, 1106, 18987853, 37975706, 132914971, 265829942, 1500040387, 3000080774, 10500282709, 21000565418]

約数ペア:

[(1, 21000565418), (2, 10500282709), (7, 3000080774), (14, 1500040387), (79, 265829942), (158, 132914971), (553, 37975706), (1106, 18987853)]