257239920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9007}}^1$

素因数の和:9047

約数の個数: 160

約数和(自身を含む): 965081088

約数和(自身を除く): 707841168

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 51, 56, 60, 68, 70, 80, 84, 85, 102, 105, 112, 119, 120, 136, 140, 168, 170, 204, 210, 238, 240, 255, 272, 280, 336, 340, 357, 408, 420, 476, 510, 560, 595, 680, 714, 816, 840, 952, 1020, 1190, 1360, 1428, 1680, 1785, 1904, 2040, 2380, 2856, 3570, 4080, 4760, 5712, 7140, 9007, 9520, 14280, 18014, 27021, 28560, 36028, 45035, 54042, 63049, 72056, 90070, 108084, 126098, 135105, 144112, 153119, 180140, 189147, 216168, 252196, 270210, 306238, 315245, 360280, 378294, 432336, 459357, 504392, 540420, 612476, 630490, 720560, 756588, 765595, 918714, 945735, 1008784, 1071833, 1080840, 1224952, 1260980, 1513176, 1531190, 1837428, 1891470, 2143666, 2161680, 2296785, 2449904, 2521960, 3026352, 3062380, 3215499, 3674856, 3782940, 4287332, 4593570, 5043920, 5359165, 6124760, 6430998, 7349712, 7565880, 8574664, 9187140, 10718330, 12249520, 12861996, 15131760, 16077495, 17149328, 18374280, 21436660, 25723992, 32154990, 36748560, 42873320, 51447984, 64309980, 85746640, 128619960, 257239920]

約数ペア:

[(1, 257239920), (2, 128619960), (3, 85746640), (4, 64309980), (5, 51447984), (6, 42873320), (7, 36748560), (8, 32154990), (10, 25723992), (12, 21436660), (14, 18374280), (15, 17149328), (16, 16077495), (17, 15131760), (20, 12861996), (21, 12249520), (24, 10718330), (28, 9187140), (30, 8574664), (34, 7565880), (35, 7349712), (40, 6430998), (42, 6124760), (48, 5359165), (51, 5043920), (56, 4593570), (60, 4287332), (68, 3782940), (70, 3674856), (80, 3215499), (84, 3062380), (85, 3026352), (102, 2521960), (105, 2449904), (112, 2296785), (119, 2161680), (120, 2143666), (136, 1891470), (140, 1837428), (168, 1531190), (170, 1513176), (204, 1260980), (210, 1224952), (238, 1080840), (240, 1071833), (255, 1008784), (272, 945735), (280, 918714), (336, 765595), (340, 756588), (357, 720560), (408, 630490), (420, 612476), (476, 540420), (510, 504392), (560, 459357), (595, 432336), (680, 378294), (714, 360280), (816, 315245), (840, 306238), (952, 270210), (1020, 252196), (1190, 216168), (1360, 189147), (1428, 180140), (1680, 153119), (1785, 144112), (1904, 135105), (2040, 126098), (2380, 108084), (2856, 90070), (3570, 72056), (4080, 63049), (4760, 54042), (5712, 45035), (7140, 36028), (9007, 28560), (9520, 27021), (14280, 18014)]