77845760

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1079

約数の個数: 72

約数和(自身を含む): 189711816

約数和(自身を除く): 111866056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 997, 1220, 1280, 1952, 1994, 2440, 3904, 3988, 4880, 4985, 7808, 7976, 9760, 9970, 15616, 15952, 19520, 19940, 31904, 39040, 39880, 60817, 63808, 78080, 79760, 121634, 127616, 159520, 243268, 255232, 304085, 319040, 486536, 608170, 638080, 973072, 1216340, 1276160, 1946144, 2432680, 3892288, 4865360, 7784576, 9730720, 15569152, 19461440, 38922880, 77845760]

約数ペア:

[(1, 77845760), (2, 38922880), (4, 19461440), (5, 15569152), (8, 9730720), (10, 7784576), (16, 4865360), (20, 3892288), (32, 2432680), (40, 1946144), (61, 1276160), (64, 1216340), (80, 973072), (122, 638080), (128, 608170), (160, 486536), (244, 319040), (256, 304085), (305, 255232), (320, 243268), (488, 159520), (610, 127616), (640, 121634), (976, 79760), (997, 78080), (1220, 63808), (1280, 60817), (1952, 39880), (1994, 39040), (2440, 31904), (3904, 19940), (3988, 19520), (4880, 15952), (4985, 15616), (7808, 9970), (7976, 9760)]