21742065

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 40452048

約数和(自身を除く): 18709983

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 97, 153, 255, 291, 293, 485, 765, 873, 879, 1455, 1465, 1649, 2637, 4365, 4395, 4947, 4981, 8245, 13185, 14841, 14943, 24735, 24905, 28421, 44829, 74205, 74715, 85263, 142105, 224145, 255789, 426315, 483157, 1278945, 1449471, 2415785, 4348413, 7247355, 21742065]

約数ペア:

[(1, 21742065), (3, 7247355), (5, 4348413), (9, 2415785), (15, 1449471), (17, 1278945), (45, 483157), (51, 426315), (85, 255789), (97, 224145), (153, 142105), (255, 85263), (291, 74715), (293, 74205), (485, 44829), (765, 28421), (873, 24905), (879, 24735), (1455, 14943), (1465, 14841), (1649, 13185), (2637, 8245), (4365, 4981), (4395, 4947)]