80281040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{271}}^1$

素因数の和:337

約数の個数: 120

約数和(自身を含む): 223819008

約数和(自身を除く): 143537968

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 271, 280, 322, 368, 460, 529, 542, 560, 644, 805, 920, 1058, 1084, 1288, 1355, 1610, 1840, 1897, 2116, 2168, 2576, 2645, 2710, 3220, 3703, 3794, 4232, 4336, 5290, 5420, 6233, 6440, 7406, 7588, 8464, 9485, 10580, 10840, 12466, 12880, 14812, 15176, 18515, 18970, 21160, 21680, 24932, 29624, 30352, 31165, 37030, 37940, 42320, 43631, 49864, 59248, 62330, 74060, 75880, 87262, 99728, 124660, 143359, 148120, 151760, 174524, 218155, 249320, 286718, 296240, 349048, 436310, 498640, 573436, 698096, 716795, 872620, 1003513, 1146872, 1433590, 1745240, 2007026, 2293744, 2867180, 3490480, 4014052, 5017565, 5734360, 8028104, 10035130, 11468720, 16056208, 20070260, 40140520, 80281040]

約数ペア:

[(1, 80281040), (2, 40140520), (4, 20070260), (5, 16056208), (7, 11468720), (8, 10035130), (10, 8028104), (14, 5734360), (16, 5017565), (20, 4014052), (23, 3490480), (28, 2867180), (35, 2293744), (40, 2007026), (46, 1745240), (56, 1433590), (70, 1146872), (80, 1003513), (92, 872620), (112, 716795), (115, 698096), (140, 573436), (161, 498640), (184, 436310), (230, 349048), (271, 296240), (280, 286718), (322, 249320), (368, 218155), (460, 174524), (529, 151760), (542, 148120), (560, 143359), (644, 124660), (805, 99728), (920, 87262), (1058, 75880), (1084, 74060), (1288, 62330), (1355, 59248), (1610, 49864), (1840, 43631), (1897, 42320), (2116, 37940), (2168, 37030), (2576, 31165), (2645, 30352), (2710, 29624), (3220, 24932), (3703, 21680), (3794, 21160), (4232, 18970), (4336, 18515), (5290, 15176), (5420, 14812), (6233, 12880), (6440, 12466), (7406, 10840), (7588, 10580), (8464, 9485)]