20263376800

素因数分解:

$2^5\times 5^2\times {\mathrm{1979}}^1\times {\mathrm{12799}}^1$

素因数の和:14798

約数の個数: 72

約数和(自身を含む): 49496832000

約数和(自身を除く): 29233455200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 1979, 3958, 7916, 9895, 12799, 15832, 19790, 25598, 31664, 39580, 49475, 51196, 63328, 63995, 79160, 98950, 102392, 127990, 158320, 197900, 204784, 255980, 316640, 319975, 395800, 409568, 511960, 639950, 791600, 1023920, 1279900, 1583200, 2047840, 2559800, 5119600, 10239200, 25329221, 50658442, 101316884, 126646105, 202633768, 253292210, 405267536, 506584420, 633230525, 810535072, 1013168840, 1266461050, 2026337680, 2532922100, 4052675360, 5065844200, 10131688400, 20263376800]

約数ペア:

[(1, 20263376800), (2, 10131688400), (4, 5065844200), (5, 4052675360), (8, 2532922100), (10, 2026337680), (16, 1266461050), (20, 1013168840), (25, 810535072), (32, 633230525), (40, 506584420), (50, 405267536), (80, 253292210), (100, 202633768), (160, 126646105), (200, 101316884), (400, 50658442), (800, 25329221), (1979, 10239200), (3958, 5119600), (7916, 2559800), (9895, 2047840), (12799, 1583200), (15832, 1279900), (19790, 1023920), (25598, 791600), (31664, 639950), (39580, 511960), (49475, 409568), (51196, 395800), (63328, 319975), (63995, 316640), (79160, 255980), (98950, 204784), (102392, 197900), (127990, 158320)]