205201515

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 357073920

約数和(自身を除く): 151872405

約数列:

[1, 3, 5, 15, 23, 41, 69, 89, 115, 123, 163, 205, 267, 345, 445, 489, 615, 815, 943, 1335, 2047, 2445, 2829, 3649, 3749, 4715, 6141, 6683, 10235, 10947, 11247, 14145, 14507, 18245, 18745, 20049, 30705, 33415, 43521, 54735, 56235, 72535, 83927, 100245, 153709, 217605, 251781, 333661, 419635, 461127, 594787, 768545, 1000983, 1258905, 1668305, 1784361, 2305635, 2973935, 5004915, 8921805, 13680101, 41040303, 68400505, 205201515]

約数ペア:

[(1, 205201515), (3, 68400505), (5, 41040303), (15, 13680101), (23, 8921805), (41, 5004915), (69, 2973935), (89, 2305635), (115, 1784361), (123, 1668305), (163, 1258905), (205, 1000983), (267, 768545), (345, 594787), (445, 461127), (489, 419635), (615, 333661), (815, 251781), (943, 217605), (1335, 153709), (2047, 100245), (2445, 83927), (2829, 72535), (3649, 56235), (3749, 54735), (4715, 43521), (6141, 33415), (6683, 30705), (10235, 20049), (10947, 18745), (11247, 18245), (14145, 14507)]