778877680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{20759}}^1$

素因数の和:20846

約数の個数: 80

約数和(自身を含む): 2100579840

約数和(自身を除く): 1321702160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 67, 70, 80, 112, 134, 140, 268, 280, 335, 469, 536, 560, 670, 938, 1072, 1340, 1876, 2345, 2680, 3752, 4690, 5360, 7504, 9380, 18760, 20759, 37520, 41518, 83036, 103795, 145313, 166072, 207590, 290626, 332144, 415180, 581252, 726565, 830360, 1162504, 1390853, 1453130, 1660720, 2325008, 2781706, 2906260, 5563412, 5812520, 6954265, 9735971, 11126824, 11625040, 13908530, 19471942, 22253648, 27817060, 38943884, 48679855, 55634120, 77887768, 97359710, 111268240, 155775536, 194719420, 389438840, 778877680]

約数ペア:

[(1, 778877680), (2, 389438840), (4, 194719420), (5, 155775536), (7, 111268240), (8, 97359710), (10, 77887768), (14, 55634120), (16, 48679855), (20, 38943884), (28, 27817060), (35, 22253648), (40, 19471942), (56, 13908530), (67, 11625040), (70, 11126824), (80, 9735971), (112, 6954265), (134, 5812520), (140, 5563412), (268, 2906260), (280, 2781706), (335, 2325008), (469, 1660720), (536, 1453130), (560, 1390853), (670, 1162504), (938, 830360), (1072, 726565), (1340, 581252), (1876, 415180), (2345, 332144), (2680, 290626), (3752, 207590), (4690, 166072), (5360, 145313), (7504, 103795), (9380, 83036), (18760, 41518), (20759, 37520)]