259966366

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1\times {\mathrm{821}}^1$

素因数の和:1260

約数の個数: 32

約数和(自身を含む): 438553440

約数和(自身を除く): 178587074

約数列:

[1, 2, 11, 22, 37, 74, 389, 407, 778, 814, 821, 1642, 4279, 8558, 9031, 14393, 18062, 28786, 30377, 60754, 158323, 316646, 319369, 334147, 638738, 668294, 3513059, 7026118, 11816653, 23633306, 129983183, 259966366]

約数ペア:

[(1, 259966366), (2, 129983183), (11, 23633306), (22, 11816653), (37, 7026118), (74, 3513059), (389, 668294), (407, 638738), (778, 334147), (814, 319369), (821, 316646), (1642, 158323), (4279, 60754), (8558, 30377), (9031, 28786), (14393, 18062)]