80888080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:345

約数の個数: 160

約数和(自身を含む): 237984768

約数和(自身を除く): 157096688

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 41, 52, 56, 65, 70, 80, 82, 91, 104, 112, 130, 140, 164, 182, 205, 208, 260, 271, 280, 287, 328, 364, 410, 455, 520, 533, 542, 560, 574, 656, 728, 820, 910, 1040, 1066, 1084, 1148, 1355, 1435, 1456, 1640, 1820, 1897, 2132, 2168, 2296, 2665, 2710, 2870, 3280, 3523, 3640, 3731, 3794, 4264, 4336, 4592, 5330, 5420, 5740, 7046, 7280, 7462, 7588, 8528, 9485, 10660, 10840, 11111, 11480, 14092, 14924, 15176, 17615, 18655, 18970, 21320, 21680, 22222, 22960, 24661, 28184, 29848, 30352, 35230, 37310, 37940, 42640, 44444, 49322, 55555, 56368, 59696, 70460, 74620, 75880, 77777, 88888, 98644, 111110, 123305, 140920, 144443, 149240, 151760, 155554, 177776, 197288, 222220, 246610, 281840, 288886, 298480, 311108, 388885, 394576, 444440, 493220, 577772, 622216, 722215, 777770, 888880, 986440, 1011101, 1155544, 1244432, 1444430, 1555540, 1972880, 2022202, 2311088, 2888860, 3111080, 4044404, 5055505, 5777720, 6222160, 8088808, 10111010, 11555440, 16177616, 20222020, 40444040, 80888080]

約数ペア:

[(1, 80888080), (2, 40444040), (4, 20222020), (5, 16177616), (7, 11555440), (8, 10111010), (10, 8088808), (13, 6222160), (14, 5777720), (16, 5055505), (20, 4044404), (26, 3111080), (28, 2888860), (35, 2311088), (40, 2022202), (41, 1972880), (52, 1555540), (56, 1444430), (65, 1244432), (70, 1155544), (80, 1011101), (82, 986440), (91, 888880), (104, 777770), (112, 722215), (130, 622216), (140, 577772), (164, 493220), (182, 444440), (205, 394576), (208, 388885), (260, 311108), (271, 298480), (280, 288886), (287, 281840), (328, 246610), (364, 222220), (410, 197288), (455, 177776), (520, 155554), (533, 151760), (542, 149240), (560, 144443), (574, 140920), (656, 123305), (728, 111110), (820, 98644), (910, 88888), (1040, 77777), (1066, 75880), (1084, 74620), (1148, 70460), (1355, 59696), (1435, 56368), (1456, 55555), (1640, 49322), (1820, 44444), (1897, 42640), (2132, 37940), (2168, 37310), (2296, 35230), (2665, 30352), (2710, 29848), (2870, 28184), (3280, 24661), (3523, 22960), (3640, 22222), (3731, 21680), (3794, 21320), (4264, 18970), (4336, 18655), (4592, 17615), (5330, 15176), (5420, 14924), (5740, 14092), (7046, 11480), (7280, 11111), (7462, 10840), (7588, 10660), (8528, 9485)]