1218966420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:790

約数の個数: 192

約数和(自身を含む): 4094447616

約数和(自身を除く): 2875481196

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 105, 115, 138, 140, 161, 210, 230, 257, 276, 322, 345, 420, 460, 483, 491, 514, 644, 690, 771, 805, 966, 982, 1028, 1285, 1380, 1473, 1542, 1610, 1799, 1932, 1964, 2415, 2455, 2570, 2946, 3084, 3220, 3437, 3598, 3855, 4830, 4910, 5140, 5397, 5892, 5911, 6874, 7196, 7365, 7710, 8995, 9660, 9820, 10311, 10794, 11293, 11822, 13748, 14730, 15420, 17185, 17733, 17990, 20622, 21588, 22586, 23644, 26985, 29460, 29555, 33879, 34370, 35466, 35980, 41244, 41377, 45172, 51555, 53970, 56465, 59110, 67758, 68740, 70932, 79051, 82754, 88665, 103110, 107940, 112930, 118220, 124131, 126187, 135516, 158102, 165508, 169395, 177330, 206220, 206885, 225860, 237153, 248262, 252374, 316204, 338790, 354660, 378561, 395255, 413770, 474306, 496524, 504748, 620655, 630935, 677580, 757122, 790510, 827540, 883309, 948612, 1185765, 1241310, 1261870, 1514244, 1581020, 1766618, 1892805, 2371530, 2482620, 2523740, 2649927, 2902301, 3533236, 3785610, 4416545, 4743060, 5299854, 5804602, 7571220, 8706903, 8833090, 10599708, 11609204, 13249635, 14511505, 17413806, 17666180, 20316107, 26499270, 29023010, 34827612, 40632214, 43534515, 52998540, 58046020, 60948321, 81264428, 87069030, 101580535, 121896642, 174138060, 203161070, 243793284, 304741605, 406322140, 609483210, 1218966420]

約数ペア:

[(1, 1218966420), (2, 609483210), (3, 406322140), (4, 304741605), (5, 243793284), (6, 203161070), (7, 174138060), (10, 121896642), (12, 101580535), (14, 87069030), (15, 81264428), (20, 60948321), (21, 58046020), (23, 52998540), (28, 43534515), (30, 40632214), (35, 34827612), (42, 29023010), (46, 26499270), (60, 20316107), (69, 17666180), (70, 17413806), (84, 14511505), (92, 13249635), (105, 11609204), (115, 10599708), (138, 8833090), (140, 8706903), (161, 7571220), (210, 5804602), (230, 5299854), (257, 4743060), (276, 4416545), (322, 3785610), (345, 3533236), (420, 2902301), (460, 2649927), (483, 2523740), (491, 2482620), (514, 2371530), (644, 1892805), (690, 1766618), (771, 1581020), (805, 1514244), (966, 1261870), (982, 1241310), (1028, 1185765), (1285, 948612), (1380, 883309), (1473, 827540), (1542, 790510), (1610, 757122), (1799, 677580), (1932, 630935), (1964, 620655), (2415, 504748), (2455, 496524), (2570, 474306), (2946, 413770), (3084, 395255), (3220, 378561), (3437, 354660), (3598, 338790), (3855, 316204), (4830, 252374), (4910, 248262), (5140, 237153), (5397, 225860), (5892, 206885), (5911, 206220), (6874, 177330), (7196, 169395), (7365, 165508), (7710, 158102), (8995, 135516), (9660, 126187), (9820, 124131), (10311, 118220), (10794, 112930), (11293, 107940), (11822, 103110), (13748, 88665), (14730, 82754), (15420, 79051), (17185, 70932), (17733, 68740), (17990, 67758), (20622, 59110), (21588, 56465), (22586, 53970), (23644, 51555), (26985, 45172), (29460, 41377), (29555, 41244), (33879, 35980), (34370, 35466)]