21487149

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 31758272

約数和(自身を除く): 10271123

約数列:

[1, 3, 9, 97, 151, 163, 291, 453, 489, 873, 1359, 1467, 14647, 15811, 24613, 43941, 47433, 73839, 131823, 142299, 221517, 2387461, 7162383, 21487149]

約数ペア:

[(1, 21487149), (3, 7162383), (9, 2387461), (97, 221517), (151, 142299), (163, 131823), (291, 73839), (453, 47433), (489, 43941), (873, 24613), (1359, 15811), (1467, 14647)]