78816760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:337

約数の個数: 128

約数和(自身を含む): 210651840

約数和(自身を除く): 131835080

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 41, 44, 55, 68, 82, 85, 88, 110, 136, 164, 170, 187, 205, 220, 257, 328, 340, 374, 410, 440, 451, 514, 680, 697, 748, 820, 902, 935, 1028, 1285, 1394, 1496, 1640, 1804, 1870, 2056, 2255, 2570, 2788, 2827, 3485, 3608, 3740, 4369, 4510, 5140, 5576, 5654, 6970, 7480, 7667, 8738, 9020, 10280, 10537, 11308, 13940, 14135, 15334, 17476, 18040, 21074, 21845, 22616, 27880, 28270, 30668, 34952, 38335, 42148, 43690, 48059, 52685, 56540, 61336, 76670, 84296, 87380, 96118, 105370, 113080, 115907, 153340, 174760, 179129, 192236, 210740, 231814, 240295, 306680, 358258, 384472, 421480, 463628, 480590, 579535, 716516, 895645, 927256, 961180, 1159070, 1433032, 1791290, 1922360, 1970419, 2318140, 3582580, 3940838, 4636280, 7165160, 7881676, 9852095, 15763352, 19704190, 39408380, 78816760]

約数ペア:

[(1, 78816760), (2, 39408380), (4, 19704190), (5, 15763352), (8, 9852095), (10, 7881676), (11, 7165160), (17, 4636280), (20, 3940838), (22, 3582580), (34, 2318140), (40, 1970419), (41, 1922360), (44, 1791290), (55, 1433032), (68, 1159070), (82, 961180), (85, 927256), (88, 895645), (110, 716516), (136, 579535), (164, 480590), (170, 463628), (187, 421480), (205, 384472), (220, 358258), (257, 306680), (328, 240295), (340, 231814), (374, 210740), (410, 192236), (440, 179129), (451, 174760), (514, 153340), (680, 115907), (697, 113080), (748, 105370), (820, 96118), (902, 87380), (935, 84296), (1028, 76670), (1285, 61336), (1394, 56540), (1496, 52685), (1640, 48059), (1804, 43690), (1870, 42148), (2056, 38335), (2255, 34952), (2570, 30668), (2788, 28270), (2827, 27880), (3485, 22616), (3608, 21845), (3740, 21074), (4369, 18040), (4510, 17476), (5140, 15334), (5576, 14135), (5654, 13940), (6970, 11308), (7480, 10537), (7667, 10280), (8738, 9020)]