81051568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20509}}^1$

素因数の和:20549

約数の個数: 40

約数和(自身を含む): 178026800

約数和(自身を除く): 96975232

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20509, 41018, 82036, 164072, 266617, 328144, 389671, 533234, 779342, 1066468, 1558684, 2132936, 3117368, 4265872, 5065723, 6234736, 10131446, 20262892, 40525784, 81051568]

約数ペア:

[(1, 81051568), (2, 40525784), (4, 20262892), (8, 10131446), (13, 6234736), (16, 5065723), (19, 4265872), (26, 3117368), (38, 2132936), (52, 1558684), (76, 1066468), (104, 779342), (152, 533234), (208, 389671), (247, 328144), (304, 266617), (494, 164072), (988, 82036), (1976, 41018), (3952, 20509)]