20353428

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{7963}}^1$

素因数の和:8044

約数の個数: 36

約数和(自身を含む): 52180128

約数和(自身を除く): 31826700

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 7963, 15926, 23889, 31852, 47778, 71667, 95556, 143334, 286668, 565373, 1130746, 1696119, 2261492, 3392238, 5088357, 6784476, 10176714, 20353428]

約数ペア:

[(1, 20353428), (2, 10176714), (3, 6784476), (4, 5088357), (6, 3392238), (9, 2261492), (12, 1696119), (18, 1130746), (36, 565373), (71, 286668), (142, 143334), (213, 95556), (284, 71667), (426, 47778), (639, 31852), (852, 23889), (1278, 15926), (2556, 7963)]