28409979

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{4889}}^1$

素因数の和:5054

約数の個数: 16

約数和(自身を含む): 41076000

約数和(自身を除く): 12666021

約数列:

[1, 3, 13, 39, 149, 447, 1937, 4889, 5811, 14667, 63557, 190671, 728461, 2185383, 9469993, 28409979]

約数ペア:

[(1, 28409979), (3, 9469993), (13, 2185383), (39, 728461), (149, 190671), (447, 63557), (1937, 14667), (4889, 5811)]