989968280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:489

約数の個数: 128

約数和(自身を含む): 2597806080

約数和(自身を除く): 1607837800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 107, 140, 173, 191, 214, 280, 346, 382, 428, 535, 692, 749, 764, 856, 865, 955, 1070, 1211, 1337, 1384, 1498, 1528, 1730, 1910, 2140, 2422, 2674, 2996, 3460, 3745, 3820, 4280, 4844, 5348, 5992, 6055, 6685, 6920, 7490, 7640, 9688, 10696, 12110, 13370, 14980, 18511, 20437, 24220, 26740, 29960, 33043, 37022, 40874, 48440, 53480, 66086, 74044, 81748, 92555, 102185, 129577, 132172, 143059, 148088, 163496, 165215, 185110, 204370, 231301, 259154, 264344, 286118, 330430, 370220, 408740, 462602, 518308, 572236, 647885, 660860, 715295, 740440, 817480, 925204, 1036616, 1144472, 1156505, 1295770, 1321720, 1430590, 1850408, 2313010, 2591540, 2861180, 3535601, 4626020, 5183080, 5722360, 7071202, 9252040, 14142404, 17678005, 24749207, 28284808, 35356010, 49498414, 70712020, 98996828, 123746035, 141424040, 197993656, 247492070, 494984140, 989968280]

約数ペア:

[(1, 989968280), (2, 494984140), (4, 247492070), (5, 197993656), (7, 141424040), (8, 123746035), (10, 98996828), (14, 70712020), (20, 49498414), (28, 35356010), (35, 28284808), (40, 24749207), (56, 17678005), (70, 14142404), (107, 9252040), (140, 7071202), (173, 5722360), (191, 5183080), (214, 4626020), (280, 3535601), (346, 2861180), (382, 2591540), (428, 2313010), (535, 1850408), (692, 1430590), (749, 1321720), (764, 1295770), (856, 1156505), (865, 1144472), (955, 1036616), (1070, 925204), (1211, 817480), (1337, 740440), (1384, 715295), (1498, 660860), (1528, 647885), (1730, 572236), (1910, 518308), (2140, 462602), (2422, 408740), (2674, 370220), (2996, 330430), (3460, 286118), (3745, 264344), (3820, 259154), (4280, 231301), (4844, 204370), (5348, 185110), (5992, 165215), (6055, 163496), (6685, 148088), (6920, 143059), (7490, 132172), (7640, 129577), (9688, 102185), (10696, 92555), (12110, 81748), (13370, 74044), (14980, 66086), (18511, 53480), (20437, 48440), (24220, 40874), (26740, 37022), (29960, 33043)]