21194145

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1103}}^1$

素因数の和:1182

約数の個数: 48

約数和(自身を含む): 42711552

約数和(自身を除く): 21517407

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 61, 63, 105, 183, 305, 315, 427, 549, 915, 1103, 1281, 2135, 2745, 3309, 3843, 5515, 6405, 7721, 9927, 16545, 19215, 23163, 38605, 49635, 67283, 69489, 115815, 201849, 336415, 347445, 470981, 605547, 1009245, 1412943, 2354905, 3027735, 4238829, 7064715, 21194145]

約数ペア:

[(1, 21194145), (3, 7064715), (5, 4238829), (7, 3027735), (9, 2354905), (15, 1412943), (21, 1009245), (35, 605547), (45, 470981), (61, 347445), (63, 336415), (105, 201849), (183, 115815), (305, 69489), (315, 67283), (427, 49635), (549, 38605), (915, 23163), (1103, 19215), (1281, 16545), (2135, 9927), (2745, 7721), (3309, 6405), (3843, 5515)]