21000992176

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{2879}}^1$

素因数の和:3194

約数の個数: 80

約数和(自身を含む): 42854400000

約数和(自身を除く): 21853407824

約数列:

[1, 2, 4, 8, 16, 29, 58, 79, 116, 158, 199, 232, 316, 398, 464, 632, 796, 1264, 1592, 2291, 2879, 3184, 4582, 5758, 5771, 9164, 11516, 11542, 15721, 18328, 23032, 23084, 31442, 36656, 46064, 46168, 62884, 83491, 92336, 125768, 166982, 227441, 251536, 333964, 454882, 455909, 572921, 667928, 909764, 911818, 1145842, 1335856, 1819528, 1823636, 2291684, 3639056, 3647272, 4583368, 6595789, 7294544, 9166736, 13191578, 16614709, 26383156, 33229418, 45260759, 52766312, 66458836, 90521518, 105532624, 132917672, 181043036, 265835344, 362086072, 724172144, 1312562011, 2625124022, 5250248044, 10500496088, 21000992176]

約数ペア:

[(1, 21000992176), (2, 10500496088), (4, 5250248044), (8, 2625124022), (16, 1312562011), (29, 724172144), (58, 362086072), (79, 265835344), (116, 181043036), (158, 132917672), (199, 105532624), (232, 90521518), (316, 66458836), (398, 52766312), (464, 45260759), (632, 33229418), (796, 26383156), (1264, 16614709), (1592, 13191578), (2291, 9166736), (2879, 7294544), (3184, 6595789), (4582, 4583368), (5758, 3647272), (5771, 3639056), (9164, 2291684), (11516, 1823636), (11542, 1819528), (15721, 1335856), (18328, 1145842), (23032, 911818), (23084, 909764), (31442, 667928), (36656, 572921), (46064, 455909), (46168, 454882), (62884, 333964), (83491, 251536), (92336, 227441), (125768, 166982)]