21297365

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1\times {\mathrm{233}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 26063856

約数和(自身を除く): 4766491

約数列:

[1, 5, 101, 181, 233, 505, 905, 1165, 18281, 23533, 42173, 91405, 117665, 210865, 4259473, 21297365]

約数ペア:

[(1, 21297365), (5, 4259473), (101, 210865), (181, 117665), (233, 91405), (505, 42173), (905, 23533), (1165, 18281)]