19868667

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 34205472

約数和(自身を除く): 14336805

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 281, 481, 637, 777, 843, 1443, 1813, 1911, 1967, 3367, 3653, 5439, 5901, 10101, 10397, 10959, 13769, 23569, 25571, 31191, 41307, 70707, 72779, 76713, 135161, 178997, 218337, 405483, 509453, 536991, 946127, 1528359, 2838381, 6622889, 19868667]

約数ペア:

[(1, 19868667), (3, 6622889), (7, 2838381), (13, 1528359), (21, 946127), (37, 536991), (39, 509453), (49, 405483), (91, 218337), (111, 178997), (147, 135161), (259, 76713), (273, 72779), (281, 70707), (481, 41307), (637, 31191), (777, 25571), (843, 23569), (1443, 13769), (1813, 10959), (1911, 10397), (1967, 10101), (3367, 5901), (3653, 5439)]