20641209

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1\times {\mathrm{421}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 28155840

約数和(自身を除く): 7514631

約数列:

[1, 3, 59, 177, 277, 421, 831, 1263, 16343, 24839, 49029, 74517, 116617, 349851, 6880403, 20641209]

約数ペア:

[(1, 20641209), (3, 6880403), (59, 349851), (177, 116617), (277, 74517), (421, 49029), (831, 24839), (1263, 16343)]