21804455

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3613}}^1$

素因数の和:3706

約数の個数: 16

約数和(自身を含む): 28102464

約数和(自身を除く): 6298009

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3613, 6035, 18065, 61421, 256523, 307105, 1282615, 4360891, 21804455]

約数ペア:

[(1, 21804455), (5, 4360891), (17, 1282615), (71, 307105), (85, 256523), (355, 61421), (1207, 18065), (3613, 6035)]