78477520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:628

約数の個数: 80

約数和(自身を含む): 200397888

約数和(自身を除く): 121920368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 257, 347, 440, 514, 694, 880, 1028, 1285, 1388, 1735, 2056, 2570, 2776, 2827, 3470, 3817, 4112, 5140, 5552, 5654, 6940, 7634, 10280, 11308, 13880, 14135, 15268, 19085, 20560, 22616, 27760, 28270, 30536, 38170, 45232, 56540, 61072, 76340, 89179, 113080, 152680, 178358, 226160, 305360, 356716, 445895, 713432, 891790, 980969, 1426864, 1783580, 1961938, 3567160, 3923876, 4904845, 7134320, 7847752, 9809690, 15695504, 19619380, 39238760, 78477520]

約数ペア:

[(1, 78477520), (2, 39238760), (4, 19619380), (5, 15695504), (8, 9809690), (10, 7847752), (11, 7134320), (16, 4904845), (20, 3923876), (22, 3567160), (40, 1961938), (44, 1783580), (55, 1426864), (80, 980969), (88, 891790), (110, 713432), (176, 445895), (220, 356716), (257, 305360), (347, 226160), (440, 178358), (514, 152680), (694, 113080), (880, 89179), (1028, 76340), (1285, 61072), (1388, 56540), (1735, 45232), (2056, 38170), (2570, 30536), (2776, 28270), (2827, 27760), (3470, 22616), (3817, 20560), (4112, 19085), (5140, 15268), (5552, 14135), (5654, 13880), (6940, 11308), (7634, 10280)]