21216585

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108803}}^1$

素因数の和:108824

約数の個数: 16

約数和(自身を含む): 36558144

約数和(自身を除く): 15341559

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108803, 326409, 544015, 1414439, 1632045, 4243317, 7072195, 21216585]

約数ペア:

[(1, 21216585), (3, 7072195), (5, 4243317), (13, 1632045), (15, 1414439), (39, 544015), (65, 326409), (195, 108803)]