16403289

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{839}}^1$

素因数の和:882

約数の個数: 32

約数和(自身を含む): 26880000

約数和(自身を除く): 10476711

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 839, 931, 1029, 2517, 2793, 5873, 6517, 15941, 17619, 19551, 41111, 47823, 111587, 123333, 287777, 334761, 781109, 863331, 2343327, 5467763, 16403289]

約数ペア:

[(1, 16403289), (3, 5467763), (7, 2343327), (19, 863331), (21, 781109), (49, 334761), (57, 287777), (133, 123333), (147, 111587), (343, 47823), (399, 41111), (839, 19551), (931, 17619), (1029, 15941), (2517, 6517), (2793, 5873)]