2008741720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1\times {\mathrm{1297}}^1$

素因数の和:2588

約数の個数: 64

約数和(自身を含む): 4672800000

約数和(自身を除く): 2664058280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 1249, 1297, 2498, 2594, 4996, 5188, 6245, 6485, 9992, 10376, 12490, 12970, 24980, 25940, 38719, 40207, 49960, 51880, 77438, 80414, 154876, 160828, 193595, 201035, 309752, 321656, 387190, 402070, 774380, 804140, 1548760, 1608280, 1619953, 3239906, 6479812, 8099765, 12959624, 16199530, 32399060, 50218543, 64798120, 100437086, 200874172, 251092715, 401748344, 502185430, 1004370860, 2008741720]

約数ペア:

[(1, 2008741720), (2, 1004370860), (4, 502185430), (5, 401748344), (8, 251092715), (10, 200874172), (20, 100437086), (31, 64798120), (40, 50218543), (62, 32399060), (124, 16199530), (155, 12959624), (248, 8099765), (310, 6479812), (620, 3239906), (1240, 1619953), (1249, 1608280), (1297, 1548760), (2498, 804140), (2594, 774380), (4996, 402070), (5188, 387190), (6245, 321656), (6485, 309752), (9992, 201035), (10376, 193595), (12490, 160828), (12970, 154876), (24980, 80414), (25940, 77438), (38719, 51880), (40207, 49960)]