21031171772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{404445611}}^1$

素因数の和:404445628

約数の個数: 12

約数和(自身を含む): 39635669976

約数和(自身を除く): 18604498204

約数列:

[1, 2, 4, 13, 26, 52, 404445611, 808891222, 1617782444, 5257792943, 10515585886, 21031171772]

約数ペア:

[(1, 21031171772), (2, 10515585886), (4, 5257792943), (13, 1617782444), (26, 808891222), (52, 404445611)]