1640444416

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{1277}}^1$

素因数の和:1501

約数の個数: 80

約数和(自身を含む): 3550882104

約数和(自身を除く): 1910437688

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 193, 208, 256, 386, 416, 512, 772, 832, 1277, 1544, 1664, 2509, 2554, 3088, 3328, 5018, 5108, 6176, 6656, 10036, 10216, 12352, 16601, 20072, 20432, 24704, 33202, 40144, 40864, 49408, 66404, 80288, 81728, 98816, 132808, 160576, 163456, 246461, 265616, 321152, 326912, 492922, 531232, 642304, 653824, 985844, 1062464, 1284608, 1971688, 2124928, 3203993, 3943376, 4249856, 6407986, 7886752, 8499712, 12815972, 15773504, 25631944, 31547008, 51263888, 63094016, 102527776, 126188032, 205055552, 410111104, 820222208, 1640444416]

約数ペア:

[(1, 1640444416), (2, 820222208), (4, 410111104), (8, 205055552), (13, 126188032), (16, 102527776), (26, 63094016), (32, 51263888), (52, 31547008), (64, 25631944), (104, 15773504), (128, 12815972), (193, 8499712), (208, 7886752), (256, 6407986), (386, 4249856), (416, 3943376), (512, 3203993), (772, 2124928), (832, 1971688), (1277, 1284608), (1544, 1062464), (1664, 985844), (2509, 653824), (2554, 642304), (3088, 531232), (3328, 492922), (5018, 326912), (5108, 321152), (6176, 265616), (6656, 246461), (10036, 163456), (10216, 160576), (12352, 132808), (16601, 98816), (20072, 81728), (20432, 80288), (24704, 66404), (33202, 49408), (40144, 40864)]