81903680

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^2\times {\mathrm{709}}^1$

素因数の和:764

約数の個数: 84

約数和(自身を含む): 206128620

約数和(自身を除く): 124224940

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 361, 380, 608, 709, 722, 760, 1216, 1418, 1444, 1520, 1805, 2836, 2888, 3040, 3545, 3610, 5672, 5776, 6080, 7090, 7220, 11344, 11552, 13471, 14180, 14440, 22688, 23104, 26942, 28360, 28880, 45376, 53884, 56720, 57760, 67355, 107768, 113440, 115520, 134710, 215536, 226880, 255949, 269420, 431072, 511898, 538840, 862144, 1023796, 1077680, 1279745, 2047592, 2155360, 2559490, 4095184, 4310720, 5118980, 8190368, 10237960, 16380736, 20475920, 40951840, 81903680]

約数ペア:

[(1, 81903680), (2, 40951840), (4, 20475920), (5, 16380736), (8, 10237960), (10, 8190368), (16, 5118980), (19, 4310720), (20, 4095184), (32, 2559490), (38, 2155360), (40, 2047592), (64, 1279745), (76, 1077680), (80, 1023796), (95, 862144), (152, 538840), (160, 511898), (190, 431072), (304, 269420), (320, 255949), (361, 226880), (380, 215536), (608, 134710), (709, 115520), (722, 113440), (760, 107768), (1216, 67355), (1418, 57760), (1444, 56720), (1520, 53884), (1805, 45376), (2836, 28880), (2888, 28360), (3040, 26942), (3545, 23104), (3610, 22688), (5672, 14440), (5776, 14180), (6080, 13471), (7090, 11552), (7220, 11344)]