20436851968

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{44179}}^1$

素因数の和:44347

約数の個数: 72

約数和(自身を含む): 44248920800

約数和(自身を除く): 23812068832

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 139, 208, 256, 278, 416, 556, 832, 1112, 1664, 1807, 2224, 3328, 3614, 4448, 7228, 8896, 14456, 17792, 28912, 35584, 44179, 57824, 88358, 115648, 176716, 231296, 353432, 462592, 574327, 706864, 1148654, 1413728, 2297308, 2827456, 4594616, 5654912, 6140881, 9189232, 11309824, 12281762, 18378464, 24563524, 36756928, 49127048, 73513856, 79831453, 98254096, 147027712, 159662906, 196508192, 319325812, 393016384, 638651624, 786032768, 1277303248, 1572065536, 2554606496, 5109212992, 10218425984, 20436851968]

約数ペア:

[(1, 20436851968), (2, 10218425984), (4, 5109212992), (8, 2554606496), (13, 1572065536), (16, 1277303248), (26, 786032768), (32, 638651624), (52, 393016384), (64, 319325812), (104, 196508192), (128, 159662906), (139, 147027712), (208, 98254096), (256, 79831453), (278, 73513856), (416, 49127048), (556, 36756928), (832, 24563524), (1112, 18378464), (1664, 12281762), (1807, 11309824), (2224, 9189232), (3328, 6140881), (3614, 5654912), (4448, 4594616), (7228, 2827456), (8896, 2297308), (14456, 1413728), (17792, 1148654), (28912, 706864), (35584, 574327), (44179, 462592), (57824, 353432), (88358, 231296), (115648, 176716)]