20572809

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1409}}^1$

素因数の和:1600

約数の個数: 16

約数和(自身を含む): 28515840

約数和(自身を除く): 7943031

約数列:

[1, 3, 31, 93, 157, 471, 1409, 4227, 4867, 14601, 43679, 131037, 221213, 663639, 6857603, 20572809]

約数ペア:

[(1, 20572809), (3, 6857603), (31, 663639), (93, 221213), (157, 131037), (471, 43679), (1409, 14601), (4227, 4867)]