18991560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{983}}^1$

素因数の和:1027

約数の個数: 128

約数和(自身を含む): 68014080

約数和(自身を除く): 49022520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 983, 1288, 1380, 1610, 1932, 1966, 2415, 2760, 2949, 3220, 3864, 3932, 4830, 4915, 5898, 6440, 6881, 7864, 9660, 9830, 11796, 13762, 14745, 19320, 19660, 20643, 22609, 23592, 27524, 29490, 34405, 39320, 41286, 45218, 55048, 58980, 67827, 68810, 82572, 90436, 103215, 113045, 117960, 135654, 137620, 158263, 165144, 180872, 206430, 226090, 271308, 275240, 316526, 339135, 412860, 452180, 474789, 542616, 633052, 678270, 791315, 825720, 904360, 949578, 1266104, 1356540, 1582630, 1899156, 2373945, 2713080, 3165260, 3798312, 4747890, 6330520, 9495780, 18991560]

約数ペア:

[(1, 18991560), (2, 9495780), (3, 6330520), (4, 4747890), (5, 3798312), (6, 3165260), (7, 2713080), (8, 2373945), (10, 1899156), (12, 1582630), (14, 1356540), (15, 1266104), (20, 949578), (21, 904360), (23, 825720), (24, 791315), (28, 678270), (30, 633052), (35, 542616), (40, 474789), (42, 452180), (46, 412860), (56, 339135), (60, 316526), (69, 275240), (70, 271308), (84, 226090), (92, 206430), (105, 180872), (115, 165144), (120, 158263), (138, 137620), (140, 135654), (161, 117960), (168, 113045), (184, 103215), (210, 90436), (230, 82572), (276, 68810), (280, 67827), (322, 58980), (345, 55048), (420, 45218), (460, 41286), (483, 39320), (552, 34405), (644, 29490), (690, 27524), (805, 23592), (840, 22609), (920, 20643), (966, 19660), (983, 19320), (1288, 14745), (1380, 13762), (1610, 11796), (1932, 9830), (1966, 9660), (2415, 7864), (2760, 6881), (2949, 6440), (3220, 5898), (3864, 4915), (3932, 4830)]