19946528

素因数分解:

$2^5\times 7^2\times {\mathrm{12721}}^1$

素因数の和:12745

約数の個数: 36

約数和(自身を含む): 45684702

約数和(自身を除く): 25738174

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 1568, 12721, 25442, 50884, 89047, 101768, 178094, 203536, 356188, 407072, 623329, 712376, 1246658, 1424752, 2493316, 2849504, 4986632, 9973264, 19946528]

約数ペア:

[(1, 19946528), (2, 9973264), (4, 4986632), (7, 2849504), (8, 2493316), (14, 1424752), (16, 1246658), (28, 712376), (32, 623329), (49, 407072), (56, 356188), (98, 203536), (112, 178094), (196, 101768), (224, 89047), (392, 50884), (784, 25442), (1568, 12721)]