21818565

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3169}}^1$

素因数の和:3203

約数の個数: 40

約数和(自身を含む): 41425560

約数和(自身を除く): 19606995

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 3169, 6885, 9507, 15845, 28521, 47535, 53873, 85563, 142605, 161619, 256689, 269365, 427815, 484857, 808095, 1283445, 1454571, 2424285, 4363713, 7272855, 21818565]

約数ペア:

[(1, 21818565), (3, 7272855), (5, 4363713), (9, 2424285), (15, 1454571), (17, 1283445), (27, 808095), (45, 484857), (51, 427815), (81, 269365), (85, 256689), (135, 161619), (153, 142605), (255, 85563), (405, 53873), (459, 47535), (765, 28521), (1377, 15845), (2295, 9507), (3169, 6885)]