20403854320

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{126199}}^1$

素因数の和:126302

約数の個数: 80

約数和(自身を含む): 49575398400

約数和(自身を除く): 29171544080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 47, 80, 86, 94, 172, 188, 215, 235, 344, 376, 430, 470, 688, 752, 860, 940, 1720, 1880, 2021, 3440, 3760, 4042, 8084, 10105, 16168, 20210, 32336, 40420, 80840, 126199, 161680, 252398, 504796, 630995, 1009592, 1261990, 2019184, 2523980, 5047960, 5426557, 5931353, 10095920, 10853114, 11862706, 21706228, 23725412, 27132785, 29656765, 43412456, 47450824, 54265570, 59313530, 86824912, 94901648, 108531140, 118627060, 217062280, 237254120, 255048179, 434124560, 474508240, 510096358, 1020192716, 1275240895, 2040385432, 2550481790, 4080770864, 5100963580, 10201927160, 20403854320]

約数ペア:

[(1, 20403854320), (2, 10201927160), (4, 5100963580), (5, 4080770864), (8, 2550481790), (10, 2040385432), (16, 1275240895), (20, 1020192716), (40, 510096358), (43, 474508240), (47, 434124560), (80, 255048179), (86, 237254120), (94, 217062280), (172, 118627060), (188, 108531140), (215, 94901648), (235, 86824912), (344, 59313530), (376, 54265570), (430, 47450824), (470, 43412456), (688, 29656765), (752, 27132785), (860, 23725412), (940, 21706228), (1720, 11862706), (1880, 10853114), (2021, 10095920), (3440, 5931353), (3760, 5426557), (4042, 5047960), (8084, 2523980), (10105, 2019184), (16168, 1261990), (20210, 1009592), (32336, 630995), (40420, 504796), (80840, 252398), (126199, 161680)]