81534460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{9871}}^1$

素因数の和:9946

約数の個数: 48

約数和(自身を含む): 199019520

約数和(自身を除く): 117485060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 4130, 8260, 9871, 19742, 39484, 49355, 69097, 98710, 138194, 197420, 276388, 345485, 582389, 690970, 1164778, 1381940, 2329556, 2911945, 4076723, 5823890, 8153446, 11647780, 16306892, 20383615, 40767230, 81534460]

約数ペア:

[(1, 81534460), (2, 40767230), (4, 20383615), (5, 16306892), (7, 11647780), (10, 8153446), (14, 5823890), (20, 4076723), (28, 2911945), (35, 2329556), (59, 1381940), (70, 1164778), (118, 690970), (140, 582389), (236, 345485), (295, 276388), (413, 197420), (590, 138194), (826, 98710), (1180, 69097), (1652, 49355), (2065, 39484), (4130, 19742), (8260, 9871)]