638864072

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:427

約数の個数: 128

約数和(自身を含む): 1551052800

約数和(自身を除く): 912188728

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 43, 44, 56, 77, 86, 88, 89, 154, 172, 178, 271, 301, 308, 344, 356, 473, 542, 602, 616, 623, 712, 946, 979, 1084, 1204, 1246, 1892, 1897, 1958, 2168, 2408, 2492, 2981, 3311, 3784, 3794, 3827, 3916, 4984, 5962, 6622, 6853, 7588, 7654, 7832, 11653, 11924, 13244, 13706, 15176, 15308, 20867, 23306, 23848, 24119, 26488, 26789, 27412, 30616, 41734, 42097, 46612, 48238, 53578, 54824, 81571, 83468, 84194, 93224, 96476, 107156, 128183, 163142, 166936, 168388, 168833, 192952, 214312, 256366, 265309, 294679, 326284, 336776, 337666, 512732, 530618, 589358, 652568, 675332, 897281, 1025464, 1037117, 1061236, 1178716, 1350664, 1794562, 1857163, 2074234, 2122472, 2357432, 3589124, 3714326, 4148468, 7178248, 7259819, 7428652, 8296936, 11408287, 14519638, 14857304, 22816574, 29039276, 45633148, 58078552, 79858009, 91266296, 159716018, 319432036, 638864072]

約数ペア:

[(1, 638864072), (2, 319432036), (4, 159716018), (7, 91266296), (8, 79858009), (11, 58078552), (14, 45633148), (22, 29039276), (28, 22816574), (43, 14857304), (44, 14519638), (56, 11408287), (77, 8296936), (86, 7428652), (88, 7259819), (89, 7178248), (154, 4148468), (172, 3714326), (178, 3589124), (271, 2357432), (301, 2122472), (308, 2074234), (344, 1857163), (356, 1794562), (473, 1350664), (542, 1178716), (602, 1061236), (616, 1037117), (623, 1025464), (712, 897281), (946, 675332), (979, 652568), (1084, 589358), (1204, 530618), (1246, 512732), (1892, 337666), (1897, 336776), (1958, 326284), (2168, 294679), (2408, 265309), (2492, 256366), (2981, 214312), (3311, 192952), (3784, 168833), (3794, 168388), (3827, 166936), (3916, 163142), (4984, 128183), (5962, 107156), (6622, 96476), (6853, 93224), (7588, 84194), (7654, 83468), (7832, 81571), (11653, 54824), (11924, 53578), (13244, 48238), (13706, 46612), (15176, 42097), (15308, 41734), (20867, 30616), (23306, 27412), (23848, 26789), (24119, 26488)]