200018800

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:491

約数の個数: 120

約数和(自身を含む): 509945040

約数和(自身を除く): 309926240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 43, 50, 58, 80, 86, 100, 116, 145, 172, 200, 215, 232, 290, 344, 400, 401, 430, 464, 580, 688, 725, 802, 860, 1075, 1160, 1247, 1450, 1604, 1720, 2005, 2150, 2320, 2494, 2900, 3208, 3440, 4010, 4300, 4988, 5800, 6235, 6416, 8020, 8600, 9976, 10025, 11600, 11629, 12470, 16040, 17200, 17243, 19952, 20050, 23258, 24940, 31175, 32080, 34486, 40100, 46516, 49880, 58145, 62350, 68972, 80200, 86215, 93032, 99760, 116290, 124700, 137944, 160400, 172430, 186064, 232580, 249400, 275888, 290725, 344860, 431075, 465160, 498800, 500047, 581450, 689720, 862150, 930320, 1000094, 1162900, 1379440, 1724300, 2000188, 2325800, 2500235, 3448600, 4000376, 4651600, 5000470, 6897200, 8000752, 10000940, 12501175, 20001880, 25002350, 40003760, 50004700, 100009400, 200018800]

約数ペア:

[(1, 200018800), (2, 100009400), (4, 50004700), (5, 40003760), (8, 25002350), (10, 20001880), (16, 12501175), (20, 10000940), (25, 8000752), (29, 6897200), (40, 5000470), (43, 4651600), (50, 4000376), (58, 3448600), (80, 2500235), (86, 2325800), (100, 2000188), (116, 1724300), (145, 1379440), (172, 1162900), (200, 1000094), (215, 930320), (232, 862150), (290, 689720), (344, 581450), (400, 500047), (401, 498800), (430, 465160), (464, 431075), (580, 344860), (688, 290725), (725, 275888), (802, 249400), (860, 232580), (1075, 186064), (1160, 172430), (1247, 160400), (1450, 137944), (1604, 124700), (1720, 116290), (2005, 99760), (2150, 93032), (2320, 86215), (2494, 80200), (2900, 68972), (3208, 62350), (3440, 58145), (4010, 49880), (4300, 46516), (4988, 40100), (5800, 34486), (6235, 32080), (6416, 31175), (8020, 24940), (8600, 23258), (9976, 20050), (10025, 19952), (11600, 17243), (11629, 17200), (12470, 16040)]