21927195

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28663}}^1$

素因数の和:28691

約数の個数: 24

約数和(自身を含む): 40244256

約数和(自身を除く): 18317061

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28663, 85989, 143315, 257967, 429945, 487271, 1289835, 1461813, 2436355, 4385439, 7309065, 21927195]

約数ペア:

[(1, 21927195), (3, 7309065), (5, 4385439), (9, 2436355), (15, 1461813), (17, 1289835), (45, 487271), (51, 429945), (85, 257967), (153, 143315), (255, 85989), (765, 28663)]