128681840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1931}}^1$

素因数の和:1975

約数の個数: 120

約数和(自身を含む): 368695152

約数和(自身を除く): 240013312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 340, 392, 476, 490, 560, 595, 680, 784, 833, 952, 980, 1190, 1360, 1666, 1904, 1931, 1960, 2380, 3332, 3862, 3920, 4165, 4760, 6664, 7724, 8330, 9520, 9655, 13328, 13517, 15448, 16660, 19310, 27034, 30896, 32827, 33320, 38620, 54068, 65654, 66640, 67585, 77240, 94619, 108136, 131308, 135170, 154480, 164135, 189238, 216272, 229789, 262616, 270340, 328270, 378476, 459578, 473095, 525232, 540680, 656540, 756952, 919156, 946190, 1081360, 1148945, 1313080, 1513904, 1608523, 1838312, 1892380, 2297890, 2626160, 3217046, 3676624, 3784760, 4595780, 6434092, 7569520, 8042615, 9191560, 12868184, 16085230, 18383120, 25736368, 32170460, 64340920, 128681840]

約数ペア:

[(1, 128681840), (2, 64340920), (4, 32170460), (5, 25736368), (7, 18383120), (8, 16085230), (10, 12868184), (14, 9191560), (16, 8042615), (17, 7569520), (20, 6434092), (28, 4595780), (34, 3784760), (35, 3676624), (40, 3217046), (49, 2626160), (56, 2297890), (68, 1892380), (70, 1838312), (80, 1608523), (85, 1513904), (98, 1313080), (112, 1148945), (119, 1081360), (136, 946190), (140, 919156), (170, 756952), (196, 656540), (238, 540680), (245, 525232), (272, 473095), (280, 459578), (340, 378476), (392, 328270), (476, 270340), (490, 262616), (560, 229789), (595, 216272), (680, 189238), (784, 164135), (833, 154480), (952, 135170), (980, 131308), (1190, 108136), (1360, 94619), (1666, 77240), (1904, 67585), (1931, 66640), (1960, 65654), (2380, 54068), (3332, 38620), (3862, 33320), (3920, 32827), (4165, 30896), (4760, 27034), (6664, 19310), (7724, 16660), (8330, 15448), (9520, 13517), (9655, 13328)]