81390960

素因数分解:

$2^4\times 3^3\times 5^1\times 7^2\times {\mathrm{769}}^1$

素因数の和:805

約数の個数: 240

約数和(自身を含む): 326541600

約数和(自身を除く): 245150640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 49, 54, 56, 60, 63, 70, 72, 80, 84, 90, 98, 105, 108, 112, 120, 126, 135, 140, 144, 147, 168, 180, 189, 196, 210, 216, 240, 245, 252, 270, 280, 294, 315, 336, 360, 378, 392, 420, 432, 441, 490, 504, 540, 560, 588, 630, 720, 735, 756, 769, 784, 840, 882, 945, 980, 1008, 1080, 1176, 1260, 1323, 1470, 1512, 1538, 1680, 1764, 1890, 1960, 2160, 2205, 2307, 2352, 2520, 2646, 2940, 3024, 3076, 3528, 3780, 3845, 3920, 4410, 4614, 5040, 5292, 5383, 5880, 6152, 6615, 6921, 7056, 7560, 7690, 8820, 9228, 10584, 10766, 11535, 11760, 12304, 13230, 13842, 15120, 15380, 16149, 17640, 18456, 20763, 21168, 21532, 23070, 26460, 26915, 27684, 30760, 32298, 34605, 35280, 36912, 37681, 41526, 43064, 46140, 48447, 52920, 53830, 55368, 61520, 64596, 69210, 75362, 80745, 83052, 86128, 92280, 96894, 103815, 105840, 107660, 110736, 113043, 129192, 138420, 145341, 150724, 161490, 166104, 184560, 188405, 193788, 207630, 215320, 226086, 242235, 258384, 276840, 290682, 301448, 322980, 332208, 339129, 376810, 387576, 415260, 430640, 452172, 484470, 553680, 565215, 581364, 602896, 645960, 678258, 726705, 753620, 775152, 830520, 904344, 968940, 1017387, 1130430, 1162728, 1291920, 1356516, 1453410, 1507240, 1661040, 1695645, 1808688, 1937880, 2034774, 2260860, 2325456, 2713032, 2906820, 3014480, 3391290, 3875760, 4069548, 4521720, 5086935, 5426064, 5813640, 6782580, 8139096, 9043440, 10173870, 11627280, 13565160, 16278192, 20347740, 27130320, 40695480, 81390960]

約数ペア:

[(1, 81390960), (2, 40695480), (3, 27130320), (4, 20347740), (5, 16278192), (6, 13565160), (7, 11627280), (8, 10173870), (9, 9043440), (10, 8139096), (12, 6782580), (14, 5813640), (15, 5426064), (16, 5086935), (18, 4521720), (20, 4069548), (21, 3875760), (24, 3391290), (27, 3014480), (28, 2906820), (30, 2713032), (35, 2325456), (36, 2260860), (40, 2034774), (42, 1937880), (45, 1808688), (48, 1695645), (49, 1661040), (54, 1507240), (56, 1453410), (60, 1356516), (63, 1291920), (70, 1162728), (72, 1130430), (80, 1017387), (84, 968940), (90, 904344), (98, 830520), (105, 775152), (108, 753620), (112, 726705), (120, 678258), (126, 645960), (135, 602896), (140, 581364), (144, 565215), (147, 553680), (168, 484470), (180, 452172), (189, 430640), (196, 415260), (210, 387576), (216, 376810), (240, 339129), (245, 332208), (252, 322980), (270, 301448), (280, 290682), (294, 276840), (315, 258384), (336, 242235), (360, 226086), (378, 215320), (392, 207630), (420, 193788), (432, 188405), (441, 184560), (490, 166104), (504, 161490), (540, 150724), (560, 145341), (588, 138420), (630, 129192), (720, 113043), (735, 110736), (756, 107660), (769, 105840), (784, 103815), (840, 96894), (882, 92280), (945, 86128), (980, 83052), (1008, 80745), (1080, 75362), (1176, 69210), (1260, 64596), (1323, 61520), (1470, 55368), (1512, 53830), (1538, 52920), (1680, 48447), (1764, 46140), (1890, 43064), (1960, 41526), (2160, 37681), (2205, 36912), (2307, 35280), (2352, 34605), (2520, 32298), (2646, 30760), (2940, 27684), (3024, 26915), (3076, 26460), (3528, 23070), (3780, 21532), (3845, 21168), (3920, 20763), (4410, 18456), (4614, 17640), (5040, 16149), (5292, 15380), (5383, 15120), (5880, 13842), (6152, 13230), (6615, 12304), (6921, 11760), (7056, 11535), (7560, 10766), (7690, 10584), (8820, 9228)]