320905620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{991}}^1$

素因数の和:1270

約数の個数: 144

約数和(自身を含む): 1117928448

約数和(自身を除く): 797022828

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 257, 315, 420, 514, 630, 771, 991, 1028, 1260, 1285, 1542, 1799, 1982, 2313, 2570, 2973, 3084, 3598, 3855, 3964, 4626, 4955, 5140, 5397, 5946, 6937, 7196, 7710, 8919, 8995, 9252, 9910, 10794, 11565, 11892, 13874, 14865, 15420, 16191, 17838, 17990, 19820, 20811, 21588, 23130, 26985, 27748, 29730, 32382, 34685, 35676, 35980, 41622, 44595, 46260, 53970, 59460, 62433, 64764, 69370, 80955, 83244, 89190, 104055, 107940, 124866, 138740, 161910, 178380, 208110, 249732, 254687, 312165, 323820, 416220, 509374, 624330, 764061, 1018748, 1248660, 1273435, 1528122, 1782809, 2292183, 2546870, 3056244, 3565618, 3820305, 4584366, 5093740, 5348427, 7131236, 7640610, 8914045, 9168732, 10696854, 11460915, 15281220, 16045281, 17828090, 21393708, 22921830, 26742135, 32090562, 35656180, 45843660, 53484270, 64181124, 80226405, 106968540, 160452810, 320905620]

約数ペア:

[(1, 320905620), (2, 160452810), (3, 106968540), (4, 80226405), (5, 64181124), (6, 53484270), (7, 45843660), (9, 35656180), (10, 32090562), (12, 26742135), (14, 22921830), (15, 21393708), (18, 17828090), (20, 16045281), (21, 15281220), (28, 11460915), (30, 10696854), (35, 9168732), (36, 8914045), (42, 7640610), (45, 7131236), (60, 5348427), (63, 5093740), (70, 4584366), (84, 3820305), (90, 3565618), (105, 3056244), (126, 2546870), (140, 2292183), (180, 1782809), (210, 1528122), (252, 1273435), (257, 1248660), (315, 1018748), (420, 764061), (514, 624330), (630, 509374), (771, 416220), (991, 323820), (1028, 312165), (1260, 254687), (1285, 249732), (1542, 208110), (1799, 178380), (1982, 161910), (2313, 138740), (2570, 124866), (2973, 107940), (3084, 104055), (3598, 89190), (3855, 83244), (3964, 80955), (4626, 69370), (4955, 64764), (5140, 62433), (5397, 59460), (5946, 53970), (6937, 46260), (7196, 44595), (7710, 41622), (8919, 35980), (8995, 35676), (9252, 34685), (9910, 32382), (10794, 29730), (11565, 27748), (11892, 26985), (13874, 23130), (14865, 21588), (15420, 20811), (16191, 19820), (17838, 17990)]