128143840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{6619}}^1$

素因数の和:6656

約数の個数: 72

約数和(自身を含む): 332813880

約数和(自身を除く): 204670040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1760, 1936, 2420, 3872, 4840, 6619, 9680, 13238, 19360, 26476, 33095, 52952, 66190, 72809, 105904, 132380, 145618, 211808, 264760, 291236, 364045, 529520, 582472, 728090, 800899, 1059040, 1164944, 1456180, 1601798, 2329888, 2912360, 3203596, 4004495, 5824720, 6407192, 8008990, 11649440, 12814384, 16017980, 25628768, 32035960, 64071920, 128143840]

約数ペア:

[(1, 128143840), (2, 64071920), (4, 32035960), (5, 25628768), (8, 16017980), (10, 12814384), (11, 11649440), (16, 8008990), (20, 6407192), (22, 5824720), (32, 4004495), (40, 3203596), (44, 2912360), (55, 2329888), (80, 1601798), (88, 1456180), (110, 1164944), (121, 1059040), (160, 800899), (176, 728090), (220, 582472), (242, 529520), (352, 364045), (440, 291236), (484, 264760), (605, 211808), (880, 145618), (968, 132380), (1210, 105904), (1760, 72809), (1936, 66190), (2420, 52952), (3872, 33095), (4840, 26476), (6619, 19360), (9680, 13238)]