81971206

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{337}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 134091360

約数和(自身を除く): 52120154

約数列:

[1, 2, 19, 37, 38, 74, 173, 337, 346, 674, 703, 1406, 3287, 6401, 6403, 6574, 12469, 12802, 12806, 24938, 58301, 116602, 121619, 236911, 243238, 473822, 1107719, 2157137, 2215438, 4314274, 40985603, 81971206]

約数ペア:

[(1, 81971206), (2, 40985603), (19, 4314274), (37, 2215438), (38, 2157137), (74, 1107719), (173, 473822), (337, 243238), (346, 236911), (674, 121619), (703, 116602), (1406, 58301), (3287, 24938), (6401, 12806), (6403, 12802), (6574, 12469)]