28651680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:319

約数の個数: 144

約数和(自身を含む): 99243144

約数和(自身を除く): 70591464

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 101, 120, 144, 160, 180, 197, 202, 240, 288, 303, 360, 394, 404, 480, 505, 591, 606, 720, 788, 808, 909, 985, 1010, 1182, 1212, 1440, 1515, 1576, 1616, 1773, 1818, 1970, 2020, 2364, 2424, 2955, 3030, 3152, 3232, 3546, 3636, 3940, 4040, 4545, 4728, 4848, 5910, 6060, 6304, 7092, 7272, 7880, 8080, 8865, 9090, 9456, 9696, 11820, 12120, 14184, 14544, 15760, 16160, 17730, 18180, 18912, 19897, 23640, 24240, 28368, 29088, 31520, 35460, 36360, 39794, 47280, 48480, 56736, 59691, 70920, 72720, 79588, 94560, 99485, 119382, 141840, 145440, 159176, 179073, 198970, 238764, 283680, 298455, 318352, 358146, 397940, 477528, 596910, 636704, 716292, 795880, 895365, 955056, 1193820, 1432584, 1591760, 1790730, 1910112, 2387640, 2865168, 3183520, 3581460, 4775280, 5730336, 7162920, 9550560, 14325840, 28651680]

約数ペア:

[(1, 28651680), (2, 14325840), (3, 9550560), (4, 7162920), (5, 5730336), (6, 4775280), (8, 3581460), (9, 3183520), (10, 2865168), (12, 2387640), (15, 1910112), (16, 1790730), (18, 1591760), (20, 1432584), (24, 1193820), (30, 955056), (32, 895365), (36, 795880), (40, 716292), (45, 636704), (48, 596910), (60, 477528), (72, 397940), (80, 358146), (90, 318352), (96, 298455), (101, 283680), (120, 238764), (144, 198970), (160, 179073), (180, 159176), (197, 145440), (202, 141840), (240, 119382), (288, 99485), (303, 94560), (360, 79588), (394, 72720), (404, 70920), (480, 59691), (505, 56736), (591, 48480), (606, 47280), (720, 39794), (788, 36360), (808, 35460), (909, 31520), (985, 29088), (1010, 28368), (1182, 24240), (1212, 23640), (1440, 19897), (1515, 18912), (1576, 18180), (1616, 17730), (1773, 16160), (1818, 15760), (1970, 14544), (2020, 14184), (2364, 12120), (2424, 11820), (2955, 9696), (3030, 9456), (3152, 9090), (3232, 8865), (3546, 8080), (3636, 7880), (3940, 7272), (4040, 7092), (4545, 6304), (4728, 6060), (4848, 5910)]