81409880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{827}}^1$

素因数の和:968

約数の個数: 64

約数和(自身を含む): 193155840

約数和(自身を除く): 111745960

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 107, 115, 184, 214, 230, 428, 460, 535, 827, 856, 920, 1070, 1654, 2140, 2461, 3308, 4135, 4280, 4922, 6616, 8270, 9844, 12305, 16540, 19021, 19688, 24610, 33080, 38042, 49220, 76084, 88489, 95105, 98440, 152168, 176978, 190210, 353956, 380420, 442445, 707912, 760840, 884890, 1769780, 2035247, 3539560, 4070494, 8140988, 10176235, 16281976, 20352470, 40704940, 81409880]

約数ペア:

[(1, 81409880), (2, 40704940), (4, 20352470), (5, 16281976), (8, 10176235), (10, 8140988), (20, 4070494), (23, 3539560), (40, 2035247), (46, 1769780), (92, 884890), (107, 760840), (115, 707912), (184, 442445), (214, 380420), (230, 353956), (428, 190210), (460, 176978), (535, 152168), (827, 98440), (856, 95105), (920, 88489), (1070, 76084), (1654, 49220), (2140, 38042), (2461, 33080), (3308, 24610), (4135, 19688), (4280, 19021), (4922, 16540), (6616, 12305), (8270, 9844)]