20344065

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 18069375

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 89, 105, 147, 245, 267, 311, 445, 623, 735, 933, 1335, 1555, 1869, 2177, 3115, 4361, 4665, 6531, 9345, 10885, 13083, 15239, 21805, 27679, 32655, 45717, 65415, 76195, 83037, 138395, 193753, 228585, 415185, 581259, 968765, 1356271, 2906295, 4068813, 6781355, 20344065]

約数ペア:

[(1, 20344065), (3, 6781355), (5, 4068813), (7, 2906295), (15, 1356271), (21, 968765), (35, 581259), (49, 415185), (89, 228585), (105, 193753), (147, 138395), (245, 83037), (267, 76195), (311, 65415), (445, 45717), (623, 32655), (735, 27679), (933, 21805), (1335, 15239), (1555, 13083), (1869, 10885), (2177, 9345), (3115, 6531), (4361, 4665)]