80199280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:567

約数の個数: 120

約数和(自身を含む): 222642000

約数和(自身を除く): 142442720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 70, 80, 82, 98, 112, 140, 164, 196, 205, 245, 280, 287, 328, 392, 410, 490, 499, 560, 574, 656, 784, 820, 980, 998, 1148, 1435, 1640, 1960, 1996, 2009, 2296, 2495, 2870, 3280, 3493, 3920, 3992, 4018, 4592, 4990, 5740, 6986, 7984, 8036, 9980, 10045, 11480, 13972, 16072, 17465, 19960, 20090, 20459, 22960, 24451, 27944, 32144, 34930, 39920, 40180, 40918, 48902, 55888, 69860, 80360, 81836, 97804, 102295, 122255, 139720, 143213, 160720, 163672, 195608, 204590, 244510, 279440, 286426, 327344, 391216, 409180, 489020, 572852, 716065, 818360, 978040, 1002491, 1145704, 1432130, 1636720, 1956080, 2004982, 2291408, 2864260, 4009964, 5012455, 5728520, 8019928, 10024910, 11457040, 16039856, 20049820, 40099640, 80199280]

約数ペア:

[(1, 80199280), (2, 40099640), (4, 20049820), (5, 16039856), (7, 11457040), (8, 10024910), (10, 8019928), (14, 5728520), (16, 5012455), (20, 4009964), (28, 2864260), (35, 2291408), (40, 2004982), (41, 1956080), (49, 1636720), (56, 1432130), (70, 1145704), (80, 1002491), (82, 978040), (98, 818360), (112, 716065), (140, 572852), (164, 489020), (196, 409180), (205, 391216), (245, 327344), (280, 286426), (287, 279440), (328, 244510), (392, 204590), (410, 195608), (490, 163672), (499, 160720), (560, 143213), (574, 139720), (656, 122255), (784, 102295), (820, 97804), (980, 81836), (998, 80360), (1148, 69860), (1435, 55888), (1640, 48902), (1960, 40918), (1996, 40180), (2009, 39920), (2296, 34930), (2495, 32144), (2870, 27944), (3280, 24451), (3493, 22960), (3920, 20459), (3992, 20090), (4018, 19960), (4592, 17465), (4990, 16072), (5740, 13972), (6986, 11480), (7984, 10045), (8036, 9980)]