81005360

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:558

約数の個数: 80

約数和(自身を含む): 200210400

約数和(自身を除く): 119205040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 137, 152, 190, 274, 304, 380, 389, 548, 685, 760, 778, 1096, 1370, 1520, 1556, 1945, 2192, 2603, 2740, 3112, 3890, 5206, 5480, 6224, 7391, 7780, 10412, 10960, 13015, 14782, 15560, 20824, 26030, 29564, 31120, 36955, 41648, 52060, 53293, 59128, 73910, 104120, 106586, 118256, 147820, 208240, 213172, 266465, 295640, 426344, 532930, 591280, 852688, 1012567, 1065860, 2025134, 2131720, 4050268, 4263440, 5062835, 8100536, 10125670, 16201072, 20251340, 40502680, 81005360]

約数ペア:

[(1, 81005360), (2, 40502680), (4, 20251340), (5, 16201072), (8, 10125670), (10, 8100536), (16, 5062835), (19, 4263440), (20, 4050268), (38, 2131720), (40, 2025134), (76, 1065860), (80, 1012567), (95, 852688), (137, 591280), (152, 532930), (190, 426344), (274, 295640), (304, 266465), (380, 213172), (389, 208240), (548, 147820), (685, 118256), (760, 106586), (778, 104120), (1096, 73910), (1370, 59128), (1520, 53293), (1556, 52060), (1945, 41648), (2192, 36955), (2603, 31120), (2740, 29564), (3112, 26030), (3890, 20824), (5206, 15560), (5480, 14782), (6224, 13015), (7391, 10960), (7780, 10412)]