21669315

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 35816256

約数和(自身を除く): 14146941

約数列:

[1, 3, 5, 15, 53, 97, 159, 265, 281, 291, 485, 795, 843, 1405, 1455, 4215, 5141, 14893, 15423, 25705, 27257, 44679, 74465, 77115, 81771, 136285, 223395, 408855, 1444621, 4333863, 7223105, 21669315]

約数ペア:

[(1, 21669315), (3, 7223105), (5, 4333863), (15, 1444621), (53, 408855), (97, 223395), (159, 136285), (265, 81771), (281, 77115), (291, 74465), (485, 44679), (795, 27257), (843, 25705), (1405, 15423), (1455, 14893), (4215, 5141)]