21926905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{337}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 35627904

約数和(自身を除く): 13700999

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 169, 337, 385, 455, 715, 845, 1001, 1183, 1685, 1859, 2359, 3707, 4381, 5005, 5915, 9295, 11795, 13013, 18535, 21905, 25949, 30667, 48191, 56953, 65065, 129745, 153335, 240955, 284765, 337337, 398671, 626483, 1686685, 1993355, 3132415, 4385381, 21926905]

約数ペア:

[(1, 21926905), (5, 4385381), (7, 3132415), (11, 1993355), (13, 1686685), (35, 626483), (55, 398671), (65, 337337), (77, 284765), (91, 240955), (143, 153335), (169, 129745), (337, 65065), (385, 56953), (455, 48191), (715, 30667), (845, 25949), (1001, 21905), (1183, 18535), (1685, 13013), (1859, 11795), (2359, 9295), (3707, 5915), (4381, 5005)]