21056871018

素因数分解:

$2^1\times 3^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1\times {\mathrm{971}}^1$

素因数の和:1443

約数の個数: 64

約数和(自身を含む): 42998169600

約数和(自身を除く): 21941298582

約数列:

[1, 2, 3, 6, 127, 149, 191, 254, 298, 381, 382, 447, 573, 762, 894, 971, 1146, 1942, 2913, 5826, 18923, 24257, 28459, 37846, 48514, 56769, 56918, 72771, 85377, 113538, 123317, 144679, 145542, 170754, 185461, 246634, 289358, 369951, 370922, 434037, 556383, 739902, 868074, 1112766, 3614293, 7228586, 10842879, 18374233, 21685758, 23553547, 27633689, 36748466, 47107094, 55122699, 55267378, 70660641, 82901067, 110245398, 141321282, 165802134, 3509478503, 7018957006, 10528435509, 21056871018]

約数ペア:

[(1, 21056871018), (2, 10528435509), (3, 7018957006), (6, 3509478503), (127, 165802134), (149, 141321282), (191, 110245398), (254, 82901067), (298, 70660641), (381, 55267378), (382, 55122699), (447, 47107094), (573, 36748466), (762, 27633689), (894, 23553547), (971, 21685758), (1146, 18374233), (1942, 10842879), (2913, 7228586), (5826, 3614293), (18923, 1112766), (24257, 868074), (28459, 739902), (37846, 556383), (48514, 434037), (56769, 370922), (56918, 369951), (72771, 289358), (85377, 246634), (113538, 185461), (123317, 170754), (144679, 145542)]