21241359

素因数分解:

$3^5\times {\mathrm{61}}^1\times {\mathrm{1433}}^1$

素因数の和:1509

約数の個数: 24

約数和(自身を含む): 32362512

約数和(自身を除く): 11121153

約数列:

[1, 3, 9, 27, 61, 81, 183, 243, 549, 1433, 1647, 4299, 4941, 12897, 14823, 38691, 87413, 116073, 262239, 348219, 786717, 2360151, 7080453, 21241359]

約数ペア:

[(1, 21241359), (3, 7080453), (9, 2360151), (27, 786717), (61, 348219), (81, 262239), (183, 116073), (243, 87413), (549, 38691), (1433, 14823), (1647, 12897), (4299, 4941)]