261440960

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{257}}^1$

素因数の和:319

約数の個数: 168

約数和(自身を含む): 724259664

約数和(自身を除く): 462818704

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 257, 272, 289, 320, 340, 352, 374, 440, 514, 544, 578, 680, 704, 748, 880, 935, 1028, 1088, 1156, 1285, 1360, 1445, 1496, 1760, 1870, 2056, 2312, 2570, 2720, 2827, 2890, 2992, 3179, 3520, 3740, 4112, 4369, 4624, 5140, 5440, 5654, 5780, 5984, 6358, 7480, 8224, 8738, 9248, 10280, 11308, 11560, 11968, 12716, 14135, 14960, 15895, 16448, 17476, 18496, 20560, 21845, 22616, 23120, 25432, 28270, 29920, 31790, 34952, 41120, 43690, 45232, 46240, 48059, 50864, 56540, 59840, 63580, 69904, 74273, 82240, 87380, 90464, 92480, 96118, 101728, 113080, 127160, 139808, 148546, 174760, 180928, 192236, 203456, 226160, 240295, 254320, 279616, 297092, 349520, 371365, 384472, 452320, 480590, 508640, 594184, 699040, 742730, 768944, 817003, 904640, 961180, 1017280, 1188368, 1398080, 1485460, 1537888, 1634006, 1922360, 2376736, 2970920, 3075776, 3268012, 3844720, 4085015, 4753472, 5941840, 6536024, 7689440, 8170030, 11883680, 13072048, 15378880, 16340060, 23767360, 26144096, 32680120, 52288192, 65360240, 130720480, 261440960]

約数ペア:

[(1, 261440960), (2, 130720480), (4, 65360240), (5, 52288192), (8, 32680120), (10, 26144096), (11, 23767360), (16, 16340060), (17, 15378880), (20, 13072048), (22, 11883680), (32, 8170030), (34, 7689440), (40, 6536024), (44, 5941840), (55, 4753472), (64, 4085015), (68, 3844720), (80, 3268012), (85, 3075776), (88, 2970920), (110, 2376736), (136, 1922360), (160, 1634006), (170, 1537888), (176, 1485460), (187, 1398080), (220, 1188368), (257, 1017280), (272, 961180), (289, 904640), (320, 817003), (340, 768944), (352, 742730), (374, 699040), (440, 594184), (514, 508640), (544, 480590), (578, 452320), (680, 384472), (704, 371365), (748, 349520), (880, 297092), (935, 279616), (1028, 254320), (1088, 240295), (1156, 226160), (1285, 203456), (1360, 192236), (1445, 180928), (1496, 174760), (1760, 148546), (1870, 139808), (2056, 127160), (2312, 113080), (2570, 101728), (2720, 96118), (2827, 92480), (2890, 90464), (2992, 87380), (3179, 82240), (3520, 74273), (3740, 69904), (4112, 63580), (4369, 59840), (4624, 56540), (5140, 50864), (5440, 48059), (5654, 46240), (5780, 45232), (5984, 43690), (6358, 41120), (7480, 34952), (8224, 31790), (8738, 29920), (9248, 28270), (10280, 25432), (11308, 23120), (11560, 22616), (11968, 21845), (12716, 20560), (14135, 18496), (14960, 17476), (15895, 16448)]