20151520

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 96

約数和(自身を含む): 50893920

約数和(自身を除く): 30742400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 43, 58, 80, 86, 101, 116, 145, 160, 172, 202, 215, 232, 290, 344, 404, 430, 464, 505, 580, 688, 808, 860, 928, 1010, 1160, 1247, 1376, 1616, 1720, 2020, 2320, 2494, 2929, 3232, 3440, 4040, 4343, 4640, 4988, 5858, 6235, 6880, 8080, 8686, 9976, 11716, 12470, 14645, 16160, 17372, 19952, 21715, 23432, 24940, 29290, 34744, 39904, 43430, 46864, 49880, 58580, 69488, 86860, 93728, 99760, 117160, 125947, 138976, 173720, 199520, 234320, 251894, 347440, 468640, 503788, 629735, 694880, 1007576, 1259470, 2015152, 2518940, 4030304, 5037880, 10075760, 20151520]

約数ペア:

[(1, 20151520), (2, 10075760), (4, 5037880), (5, 4030304), (8, 2518940), (10, 2015152), (16, 1259470), (20, 1007576), (29, 694880), (32, 629735), (40, 503788), (43, 468640), (58, 347440), (80, 251894), (86, 234320), (101, 199520), (116, 173720), (145, 138976), (160, 125947), (172, 117160), (202, 99760), (215, 93728), (232, 86860), (290, 69488), (344, 58580), (404, 49880), (430, 46864), (464, 43430), (505, 39904), (580, 34744), (688, 29290), (808, 24940), (860, 23432), (928, 21715), (1010, 19952), (1160, 17372), (1247, 16160), (1376, 14645), (1616, 12470), (1720, 11716), (2020, 9976), (2320, 8686), (2494, 8080), (2929, 6880), (3232, 6235), (3440, 5858), (4040, 4988), (4343, 4640)]