256176560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1949}}^1$

素因数の和:2046

約数の個数: 80

約数和(自身を含む): 626745600

約数和(自身を除く): 370569040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 53, 62, 80, 106, 124, 155, 212, 248, 265, 310, 424, 496, 530, 620, 848, 1060, 1240, 1643, 1949, 2120, 2480, 3286, 3898, 4240, 6572, 7796, 8215, 9745, 13144, 15592, 16430, 19490, 26288, 31184, 32860, 38980, 60419, 65720, 77960, 103297, 120838, 131440, 155920, 206594, 241676, 302095, 413188, 483352, 516485, 604190, 826376, 966704, 1032970, 1208380, 1652752, 2065940, 2416760, 3202207, 4131880, 4833520, 6404414, 8263760, 12808828, 16011035, 25617656, 32022070, 51235312, 64044140, 128088280, 256176560]

約数ペア:

[(1, 256176560), (2, 128088280), (4, 64044140), (5, 51235312), (8, 32022070), (10, 25617656), (16, 16011035), (20, 12808828), (31, 8263760), (40, 6404414), (53, 4833520), (62, 4131880), (80, 3202207), (106, 2416760), (124, 2065940), (155, 1652752), (212, 1208380), (248, 1032970), (265, 966704), (310, 826376), (424, 604190), (496, 516485), (530, 483352), (620, 413188), (848, 302095), (1060, 241676), (1240, 206594), (1643, 155920), (1949, 131440), (2120, 120838), (2480, 103297), (3286, 77960), (3898, 65720), (4240, 60419), (6572, 38980), (7796, 32860), (8215, 31184), (9745, 26288), (13144, 19490), (15592, 16430)]