256249980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{383}}^1$

素因数の和:470

約数の個数: 240

約数和(自身を含む): 936714240

約数和(自身を除く): 680464260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 59, 60, 63, 70, 81, 84, 90, 105, 108, 118, 126, 135, 140, 162, 177, 180, 189, 210, 236, 252, 270, 295, 315, 324, 354, 378, 383, 405, 413, 420, 531, 540, 567, 590, 630, 708, 756, 766, 810, 826, 885, 945, 1062, 1134, 1149, 1180, 1239, 1260, 1532, 1593, 1620, 1652, 1770, 1890, 1915, 2065, 2124, 2268, 2298, 2478, 2655, 2681, 2835, 3186, 3447, 3540, 3717, 3780, 3830, 4130, 4596, 4779, 4956, 5310, 5362, 5670, 5745, 6195, 6372, 6894, 7434, 7660, 7965, 8043, 8260, 9558, 10341, 10620, 10724, 11151, 11340, 11490, 12390, 13405, 13788, 14868, 15930, 16086, 17235, 18585, 19116, 20682, 22302, 22597, 22980, 23895, 24129, 24780, 26810, 31023, 31860, 32172, 33453, 34470, 37170, 40215, 41364, 44604, 45194, 47790, 48258, 51705, 53620, 55755, 62046, 66906, 67791, 68940, 72387, 74340, 80430, 90388, 95580, 96516, 103410, 111510, 112985, 120645, 124092, 133812, 135582, 144774, 155115, 158179, 160860, 167265, 203373, 206820, 217161, 223020, 225970, 241290, 271164, 289548, 310230, 316358, 334530, 338955, 361935, 406746, 434322, 451940, 474537, 482580, 610119, 620460, 632716, 669060, 677910, 723870, 790895, 813492, 868644, 949074, 1016865, 1085805, 1220238, 1355820, 1423611, 1447740, 1581790, 1830357, 1898148, 2033730, 2171610, 2372685, 2440476, 2847222, 3050595, 3163580, 3660714, 4067460, 4270833, 4343220, 4745370, 5694444, 6101190, 7118055, 7321428, 8541666, 9151785, 9490740, 12202380, 12812499, 14236110, 17083332, 18303570, 21354165, 25624998, 28472220, 36607140, 42708330, 51249996, 64062495, 85416660, 128124990, 256249980]

約数ペア:

[(1, 256249980), (2, 128124990), (3, 85416660), (4, 64062495), (5, 51249996), (6, 42708330), (7, 36607140), (9, 28472220), (10, 25624998), (12, 21354165), (14, 18303570), (15, 17083332), (18, 14236110), (20, 12812499), (21, 12202380), (27, 9490740), (28, 9151785), (30, 8541666), (35, 7321428), (36, 7118055), (42, 6101190), (45, 5694444), (54, 4745370), (59, 4343220), (60, 4270833), (63, 4067460), (70, 3660714), (81, 3163580), (84, 3050595), (90, 2847222), (105, 2440476), (108, 2372685), (118, 2171610), (126, 2033730), (135, 1898148), (140, 1830357), (162, 1581790), (177, 1447740), (180, 1423611), (189, 1355820), (210, 1220238), (236, 1085805), (252, 1016865), (270, 949074), (295, 868644), (315, 813492), (324, 790895), (354, 723870), (378, 677910), (383, 669060), (405, 632716), (413, 620460), (420, 610119), (531, 482580), (540, 474537), (567, 451940), (590, 434322), (630, 406746), (708, 361935), (756, 338955), (766, 334530), (810, 316358), (826, 310230), (885, 289548), (945, 271164), (1062, 241290), (1134, 225970), (1149, 223020), (1180, 217161), (1239, 206820), (1260, 203373), (1532, 167265), (1593, 160860), (1620, 158179), (1652, 155115), (1770, 144774), (1890, 135582), (1915, 133812), (2065, 124092), (2124, 120645), (2268, 112985), (2298, 111510), (2478, 103410), (2655, 96516), (2681, 95580), (2835, 90388), (3186, 80430), (3447, 74340), (3540, 72387), (3717, 68940), (3780, 67791), (3830, 66906), (4130, 62046), (4596, 55755), (4779, 53620), (4956, 51705), (5310, 48258), (5362, 47790), (5670, 45194), (5745, 44604), (6195, 41364), (6372, 40215), (6894, 37170), (7434, 34470), (7660, 33453), (7965, 32172), (8043, 31860), (8260, 31023), (9558, 26810), (10341, 24780), (10620, 24129), (10724, 23895), (11151, 22980), (11340, 22597), (11490, 22302), (12390, 20682), (13405, 19116), (13788, 18585), (14868, 17235), (15930, 16086)]