20204324

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 42016128

約数和(自身を除く): 21811804

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 97, 172, 173, 194, 301, 346, 388, 602, 679, 692, 1204, 1211, 1358, 2422, 2716, 4171, 4844, 7439, 8342, 14878, 16684, 16781, 29197, 29756, 33562, 52073, 58394, 67124, 104146, 116788, 117467, 208292, 234934, 469868, 721583, 1443166, 2886332, 5051081, 10102162, 20204324]

約数ペア:

[(1, 20204324), (2, 10102162), (4, 5051081), (7, 2886332), (14, 1443166), (28, 721583), (43, 469868), (86, 234934), (97, 208292), (172, 117467), (173, 116788), (194, 104146), (301, 67124), (346, 58394), (388, 52073), (602, 33562), (679, 29756), (692, 29197), (1204, 16781), (1211, 16684), (1358, 14878), (2422, 8342), (2716, 7439), (4171, 4844)]