81415168

素因数分解:

$2^{10}\times {\mathrm{43}}^3$

素因数の和:149

約数の個数: 44

約数和(自身を含む): 166625800

約数和(自身を除く): 85210632

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 512, 688, 1024, 1376, 1849, 2752, 3698, 5504, 7396, 11008, 14792, 22016, 29584, 44032, 59168, 79507, 118336, 159014, 236672, 318028, 473344, 636056, 946688, 1272112, 1893376, 2544224, 5088448, 10176896, 20353792, 40707584, 81415168]

約数ペア:

[(1, 81415168), (2, 40707584), (4, 20353792), (8, 10176896), (16, 5088448), (32, 2544224), (43, 1893376), (64, 1272112), (86, 946688), (128, 636056), (172, 473344), (256, 318028), (344, 236672), (512, 159014), (688, 118336), (1024, 79507), (1376, 59168), (1849, 44032), (2752, 29584), (3698, 22016), (5504, 14792), (7396, 11008)]