19947824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3307}}^1$

素因数の和:3357

約数の個数: 40

約数和(自身を含む): 43070160

約数和(自身を除く): 23122336

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 104, 116, 208, 232, 377, 464, 754, 1508, 3016, 3307, 6032, 6614, 13228, 26456, 42991, 52912, 85982, 95903, 171964, 191806, 343928, 383612, 687856, 767224, 1246739, 1534448, 2493478, 4986956, 9973912, 19947824]

約数ペア:

[(1, 19947824), (2, 9973912), (4, 4986956), (8, 2493478), (13, 1534448), (16, 1246739), (26, 767224), (29, 687856), (52, 383612), (58, 343928), (104, 191806), (116, 171964), (208, 95903), (232, 85982), (377, 52912), (464, 42991), (754, 26456), (1508, 13228), (3016, 6614), (3307, 6032)]