208580405

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{307}}^1\times {\mathrm{1123}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 276261216

約数和(自身を除く): 67680811

約数列:

[1, 5, 11, 55, 121, 307, 605, 1123, 1535, 3377, 5615, 12353, 16885, 37147, 61765, 135883, 185735, 344761, 679415, 1723805, 3792371, 18961855, 41716081, 208580405]

約数ペア:

[(1, 208580405), (5, 41716081), (11, 18961855), (55, 3792371), (121, 1723805), (307, 679415), (605, 344761), (1123, 185735), (1535, 135883), (3377, 61765), (5615, 37147), (12353, 16885)]