18520516

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1123}}^1$

素因数の和:1184

約数の個数: 48

約数和(自身を含む): 40284160

約数和(自身を除く): 21763644

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 62, 76, 124, 133, 217, 266, 434, 532, 589, 868, 1123, 1178, 2246, 2356, 4123, 4492, 7861, 8246, 15722, 16492, 21337, 31444, 34813, 42674, 69626, 85348, 139252, 149359, 243691, 298718, 487382, 597436, 661447, 974764, 1322894, 2645788, 4630129, 9260258, 18520516]

約数ペア:

[(1, 18520516), (2, 9260258), (4, 4630129), (7, 2645788), (14, 1322894), (19, 974764), (28, 661447), (31, 597436), (38, 487382), (62, 298718), (76, 243691), (124, 149359), (133, 139252), (217, 85348), (266, 69626), (434, 42674), (532, 34813), (589, 31444), (868, 21337), (1123, 16492), (1178, 15722), (2246, 8246), (2356, 7861), (4123, 4492)]