261556560

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{419}}^1$

素因数の和:475

約数の個数: 240

約数和(自身を含む): 959313600

約数和(自身を除く): 697757040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 48, 51, 54, 60, 68, 72, 80, 85, 90, 102, 108, 120, 135, 136, 144, 153, 170, 180, 204, 216, 240, 255, 270, 272, 289, 306, 340, 360, 408, 419, 432, 459, 510, 540, 578, 612, 680, 720, 765, 816, 838, 867, 918, 1020, 1080, 1156, 1224, 1257, 1360, 1445, 1530, 1676, 1734, 1836, 2040, 2095, 2160, 2295, 2312, 2448, 2514, 2601, 2890, 3060, 3352, 3468, 3672, 3771, 4080, 4190, 4335, 4590, 4624, 5028, 5202, 5780, 6120, 6285, 6704, 6936, 7123, 7344, 7542, 7803, 8380, 8670, 9180, 10056, 10404, 11313, 11560, 12240, 12570, 13005, 13872, 14246, 15084, 15606, 16760, 17340, 18360, 18855, 20112, 20808, 21369, 22626, 23120, 25140, 26010, 28492, 30168, 31212, 33520, 34680, 35615, 36720, 37710, 39015, 41616, 42738, 45252, 50280, 52020, 56565, 56984, 60336, 62424, 64107, 69360, 71230, 75420, 78030, 85476, 90504, 100560, 104040, 106845, 113130, 113968, 121091, 124848, 128214, 142460, 150840, 156060, 170952, 181008, 192321, 208080, 213690, 226260, 242182, 256428, 284920, 301680, 312120, 320535, 341904, 363273, 384642, 427380, 452520, 484364, 512856, 569840, 605455, 624240, 641070, 726546, 769284, 854760, 905040, 961605, 968728, 1025712, 1089819, 1210910, 1282140, 1453092, 1538568, 1709520, 1816365, 1923210, 1937456, 2179638, 2421820, 2564280, 2906184, 3077136, 3269457, 3632730, 3846420, 4359276, 4843640, 5128560, 5449095, 5812368, 6538914, 7265460, 7692840, 8718552, 9687280, 10898190, 13077828, 14530920, 15385680, 16347285, 17437104, 21796380, 26155656, 29061840, 32694570, 43592760, 52311312, 65389140, 87185520, 130778280, 261556560]

約数ペア:

[(1, 261556560), (2, 130778280), (3, 87185520), (4, 65389140), (5, 52311312), (6, 43592760), (8, 32694570), (9, 29061840), (10, 26155656), (12, 21796380), (15, 17437104), (16, 16347285), (17, 15385680), (18, 14530920), (20, 13077828), (24, 10898190), (27, 9687280), (30, 8718552), (34, 7692840), (36, 7265460), (40, 6538914), (45, 5812368), (48, 5449095), (51, 5128560), (54, 4843640), (60, 4359276), (68, 3846420), (72, 3632730), (80, 3269457), (85, 3077136), (90, 2906184), (102, 2564280), (108, 2421820), (120, 2179638), (135, 1937456), (136, 1923210), (144, 1816365), (153, 1709520), (170, 1538568), (180, 1453092), (204, 1282140), (216, 1210910), (240, 1089819), (255, 1025712), (270, 968728), (272, 961605), (289, 905040), (306, 854760), (340, 769284), (360, 726546), (408, 641070), (419, 624240), (432, 605455), (459, 569840), (510, 512856), (540, 484364), (578, 452520), (612, 427380), (680, 384642), (720, 363273), (765, 341904), (816, 320535), (838, 312120), (867, 301680), (918, 284920), (1020, 256428), (1080, 242182), (1156, 226260), (1224, 213690), (1257, 208080), (1360, 192321), (1445, 181008), (1530, 170952), (1676, 156060), (1734, 150840), (1836, 142460), (2040, 128214), (2095, 124848), (2160, 121091), (2295, 113968), (2312, 113130), (2448, 106845), (2514, 104040), (2601, 100560), (2890, 90504), (3060, 85476), (3352, 78030), (3468, 75420), (3672, 71230), (3771, 69360), (4080, 64107), (4190, 62424), (4335, 60336), (4590, 56984), (4624, 56565), (5028, 52020), (5202, 50280), (5780, 45252), (6120, 42738), (6285, 41616), (6704, 39015), (6936, 37710), (7123, 36720), (7344, 35615), (7542, 34680), (7803, 33520), (8380, 31212), (8670, 30168), (9180, 28492), (10056, 26010), (10404, 25140), (11313, 23120), (11560, 22626), (12240, 21369), (12570, 20808), (13005, 20112), (13872, 18855), (14246, 18360), (15084, 17340), (15606, 16760)]