640154760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:580

約数の個数: 256

約数和(自身を含む): 2311372800

約数和(自身を除く): 1671218040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 43, 56, 60, 70, 74, 84, 86, 105, 111, 120, 129, 140, 148, 168, 172, 185, 210, 215, 222, 258, 259, 280, 296, 301, 344, 370, 420, 430, 444, 479, 516, 518, 555, 602, 645, 740, 777, 840, 860, 888, 903, 958, 1032, 1036, 1110, 1204, 1290, 1295, 1437, 1480, 1505, 1554, 1591, 1720, 1806, 1916, 2072, 2220, 2395, 2408, 2580, 2590, 2874, 3010, 3108, 3182, 3353, 3612, 3832, 3885, 4440, 4515, 4773, 4790, 5160, 5180, 5748, 6020, 6216, 6364, 6706, 7185, 7224, 7770, 7955, 9030, 9546, 9580, 10059, 10360, 11137, 11496, 12040, 12728, 13412, 14370, 15540, 15910, 16765, 17723, 18060, 19092, 19160, 20118, 20597, 22274, 23865, 26824, 28740, 31080, 31820, 33411, 33530, 35446, 36120, 38184, 40236, 41194, 44548, 47730, 50295, 53169, 55685, 57480, 61791, 63640, 66822, 67060, 70892, 80472, 82388, 88615, 89096, 95460, 100590, 102985, 106338, 111370, 123582, 124061, 133644, 134120, 141784, 144179, 164776, 167055, 177230, 190920, 201180, 205970, 212676, 222740, 247164, 248122, 265845, 267288, 288358, 308955, 334110, 354460, 372183, 402360, 411940, 425352, 432537, 445480, 494328, 496244, 531690, 576716, 617910, 620305, 668220, 708920, 720895, 744366, 762089, 823880, 865074, 992488, 1063380, 1153432, 1235820, 1240610, 1336440, 1441790, 1488732, 1524178, 1730148, 1860915, 2126760, 2162685, 2286267, 2471640, 2481220, 2883580, 2977464, 3048356, 3460296, 3721830, 3810445, 4325370, 4572534, 4962440, 5334623, 5767160, 6096712, 7443660, 7620890, 8650740, 9145068, 10669246, 11431335, 14887320, 15241780, 16003869, 17301480, 18290136, 21338492, 22862670, 26673115, 30483560, 32007738, 42676984, 45725340, 53346230, 64015476, 80019345, 91450680, 106692460, 128030952, 160038690, 213384920, 320077380, 640154760]

約数ペア:

[(1, 640154760), (2, 320077380), (3, 213384920), (4, 160038690), (5, 128030952), (6, 106692460), (7, 91450680), (8, 80019345), (10, 64015476), (12, 53346230), (14, 45725340), (15, 42676984), (20, 32007738), (21, 30483560), (24, 26673115), (28, 22862670), (30, 21338492), (35, 18290136), (37, 17301480), (40, 16003869), (42, 15241780), (43, 14887320), (56, 11431335), (60, 10669246), (70, 9145068), (74, 8650740), (84, 7620890), (86, 7443660), (105, 6096712), (111, 5767160), (120, 5334623), (129, 4962440), (140, 4572534), (148, 4325370), (168, 3810445), (172, 3721830), (185, 3460296), (210, 3048356), (215, 2977464), (222, 2883580), (258, 2481220), (259, 2471640), (280, 2286267), (296, 2162685), (301, 2126760), (344, 1860915), (370, 1730148), (420, 1524178), (430, 1488732), (444, 1441790), (479, 1336440), (516, 1240610), (518, 1235820), (555, 1153432), (602, 1063380), (645, 992488), (740, 865074), (777, 823880), (840, 762089), (860, 744366), (888, 720895), (903, 708920), (958, 668220), (1032, 620305), (1036, 617910), (1110, 576716), (1204, 531690), (1290, 496244), (1295, 494328), (1437, 445480), (1480, 432537), (1505, 425352), (1554, 411940), (1591, 402360), (1720, 372183), (1806, 354460), (1916, 334110), (2072, 308955), (2220, 288358), (2395, 267288), (2408, 265845), (2580, 248122), (2590, 247164), (2874, 222740), (3010, 212676), (3108, 205970), (3182, 201180), (3353, 190920), (3612, 177230), (3832, 167055), (3885, 164776), (4440, 144179), (4515, 141784), (4773, 134120), (4790, 133644), (5160, 124061), (5180, 123582), (5748, 111370), (6020, 106338), (6216, 102985), (6364, 100590), (6706, 95460), (7185, 89096), (7224, 88615), (7770, 82388), (7955, 80472), (9030, 70892), (9546, 67060), (9580, 66822), (10059, 63640), (10360, 61791), (11137, 57480), (11496, 55685), (12040, 53169), (12728, 50295), (13412, 47730), (14370, 44548), (15540, 41194), (15910, 40236), (16765, 38184), (17723, 36120), (18060, 35446), (19092, 33530), (19160, 33411), (20118, 31820), (20597, 31080), (22274, 28740), (23865, 26824)]