21113105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6911}}^1$

素因数の和:6976

約数の個数: 16

約数和(自身を含む): 27869184

約数和(自身を除く): 6756079

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6911, 34555, 89843, 324817, 449215, 1624085, 4222621, 21113105]

約数ペア:

[(1, 21113105), (5, 4222621), (13, 1624085), (47, 449215), (65, 324817), (235, 89843), (611, 34555), (3055, 6911)]