21338096

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102587}}^1$

素因数の和:102608

約数の個数: 20

約数和(自身を含む): 44523192

約数和(自身を除く): 23185096

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102587, 205174, 410348, 820696, 1333631, 1641392, 2667262, 5334524, 10669048, 21338096]

約数ペア:

[(1, 21338096), (2, 10669048), (4, 5334524), (8, 2667262), (13, 1641392), (16, 1333631), (26, 820696), (52, 410348), (104, 205174), (208, 102587)]