257813640

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{389}}^1$

素因数の和:676

約数の個数: 192

約数和(自身を含む): 963705600

約数和(自身を除く): 705891960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 263, 280, 315, 360, 389, 420, 504, 526, 630, 778, 789, 840, 1052, 1167, 1260, 1315, 1556, 1578, 1841, 1945, 2104, 2334, 2367, 2520, 2630, 2723, 3112, 3156, 3501, 3682, 3890, 3945, 4668, 4734, 5260, 5446, 5523, 5835, 6312, 7002, 7364, 7780, 7890, 8169, 9205, 9336, 9468, 10520, 10892, 11046, 11670, 11835, 13615, 14004, 14728, 15560, 15780, 16338, 16569, 17505, 18410, 18936, 21784, 22092, 23340, 23670, 24507, 27230, 27615, 28008, 31560, 32676, 33138, 35010, 36820, 40845, 44184, 46680, 47340, 49014, 54460, 55230, 65352, 66276, 70020, 73640, 81690, 82845, 94680, 98028, 102307, 108920, 110460, 122535, 132552, 140040, 163380, 165690, 196056, 204614, 220920, 245070, 306921, 326760, 331380, 409228, 490140, 511535, 613842, 662760, 716149, 818456, 920763, 980280, 1023070, 1227684, 1432298, 1534605, 1841526, 2046140, 2148447, 2455368, 2864596, 3069210, 3580745, 3683052, 4092280, 4296894, 4603815, 5729192, 6138420, 6445341, 7161490, 7366104, 8593788, 9207630, 10742235, 12276840, 12890682, 14322980, 17187576, 18415260, 21484470, 25781364, 28645960, 32226705, 36830520, 42968940, 51562728, 64453410, 85937880, 128906820, 257813640]

約数ペア:

[(1, 257813640), (2, 128906820), (3, 85937880), (4, 64453410), (5, 51562728), (6, 42968940), (7, 36830520), (8, 32226705), (9, 28645960), (10, 25781364), (12, 21484470), (14, 18415260), (15, 17187576), (18, 14322980), (20, 12890682), (21, 12276840), (24, 10742235), (28, 9207630), (30, 8593788), (35, 7366104), (36, 7161490), (40, 6445341), (42, 6138420), (45, 5729192), (56, 4603815), (60, 4296894), (63, 4092280), (70, 3683052), (72, 3580745), (84, 3069210), (90, 2864596), (105, 2455368), (120, 2148447), (126, 2046140), (140, 1841526), (168, 1534605), (180, 1432298), (210, 1227684), (252, 1023070), (263, 980280), (280, 920763), (315, 818456), (360, 716149), (389, 662760), (420, 613842), (504, 511535), (526, 490140), (630, 409228), (778, 331380), (789, 326760), (840, 306921), (1052, 245070), (1167, 220920), (1260, 204614), (1315, 196056), (1556, 165690), (1578, 163380), (1841, 140040), (1945, 132552), (2104, 122535), (2334, 110460), (2367, 108920), (2520, 102307), (2630, 98028), (2723, 94680), (3112, 82845), (3156, 81690), (3501, 73640), (3682, 70020), (3890, 66276), (3945, 65352), (4668, 55230), (4734, 54460), (5260, 49014), (5446, 47340), (5523, 46680), (5835, 44184), (6312, 40845), (7002, 36820), (7364, 35010), (7780, 33138), (7890, 32676), (8169, 31560), (9205, 28008), (9336, 27615), (9468, 27230), (10520, 24507), (10892, 23670), (11046, 23340), (11670, 22092), (11835, 21784), (13615, 18936), (14004, 18410), (14728, 17505), (15560, 16569), (15780, 16338)]