20779185

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1663}}^1$

素因数の和:1702

約数の個数: 48

約数和(自身を含む): 40974336

約数和(自身を除く): 20195151

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1663, 1785, 2499, 4165, 4989, 8315, 11641, 12495, 24945, 28271, 34923, 58205, 81487, 84813, 141355, 174615, 197897, 244461, 407435, 424065, 593691, 989485, 1222305, 1385279, 2968455, 4155837, 6926395, 20779185]

約数ペア:

[(1, 20779185), (3, 6926395), (5, 4155837), (7, 2968455), (15, 1385279), (17, 1222305), (21, 989485), (35, 593691), (49, 424065), (51, 407435), (85, 244461), (105, 197897), (119, 174615), (147, 141355), (245, 84813), (255, 81487), (357, 58205), (595, 34923), (735, 28271), (833, 24945), (1663, 12495), (1785, 11641), (2499, 8315), (4165, 4989)]