21538773

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1025

約数の個数: 24

約数和(自身を含む): 32438016

約数和(自身を除く): 10899243

約数列:

[1, 3, 9, 37, 71, 111, 213, 333, 639, 911, 2627, 2733, 7881, 8199, 23643, 33707, 64681, 101121, 194043, 303363, 582129, 2393197, 7179591, 21538773]

約数ペア:

[(1, 21538773), (3, 7179591), (9, 2393197), (37, 582129), (71, 303363), (111, 194043), (213, 101121), (333, 64681), (639, 33707), (911, 23643), (2627, 8199), (2733, 7881)]