78906880

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2371}}^1$

素因数の和:2407

約数の個数: 80

約数和(自身を含む): 203830704

約数和(自身を除く): 124923824

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2371, 2560, 3328, 4160, 4742, 6656, 8320, 9484, 11855, 16640, 18968, 23710, 30823, 33280, 37936, 47420, 61646, 75872, 94840, 123292, 151744, 154115, 189680, 246584, 303488, 308230, 379360, 493168, 606976, 616460, 758720, 986336, 1213952, 1232920, 1517440, 1972672, 2465840, 3034880, 3945344, 4931680, 6069760, 7890688, 9863360, 15781376, 19726720, 39453440, 78906880]

約数ペア:

[(1, 78906880), (2, 39453440), (4, 19726720), (5, 15781376), (8, 9863360), (10, 7890688), (13, 6069760), (16, 4931680), (20, 3945344), (26, 3034880), (32, 2465840), (40, 1972672), (52, 1517440), (64, 1232920), (65, 1213952), (80, 986336), (104, 758720), (128, 616460), (130, 606976), (160, 493168), (208, 379360), (256, 308230), (260, 303488), (320, 246584), (416, 189680), (512, 154115), (520, 151744), (640, 123292), (832, 94840), (1040, 75872), (1280, 61646), (1664, 47420), (2080, 37936), (2371, 33280), (2560, 30823), (3328, 23710), (4160, 18968), (4742, 16640), (6656, 11855), (8320, 9484)]