20552931

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 35555520

約数和(自身を除く): 15002589

約数列:

[1, 3, 7, 9, 21, 41, 63, 73, 109, 123, 219, 287, 327, 369, 511, 657, 763, 861, 981, 1533, 2289, 2583, 2993, 4469, 4599, 6867, 7957, 8979, 13407, 20951, 23871, 26937, 31283, 40221, 55699, 62853, 71613, 93849, 167097, 188559, 281547, 326237, 501291, 978711, 2283659, 2936133, 6850977, 20552931]

約数ペア:

[(1, 20552931), (3, 6850977), (7, 2936133), (9, 2283659), (21, 978711), (41, 501291), (63, 326237), (73, 281547), (109, 188559), (123, 167097), (219, 93849), (287, 71613), (327, 62853), (369, 55699), (511, 40221), (657, 31283), (763, 26937), (861, 23871), (981, 20951), (1533, 13407), (2289, 8979), (2583, 7957), (2993, 6867), (4469, 4599)]