81535580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18787}}^1$

素因数の和:18834

約数の個数: 48

約数和(自身を含む): 202008576

約数和(自身を除く): 120472996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 18787, 37574, 75148, 93935, 131509, 187870, 263018, 375740, 526036, 582397, 657545, 1164794, 1315090, 2329588, 2630180, 2911985, 4076779, 5823970, 8153558, 11647940, 16307116, 20383895, 40767790, 81535580]

約数ペア:

[(1, 81535580), (2, 40767790), (4, 20383895), (5, 16307116), (7, 11647940), (10, 8153558), (14, 5823970), (20, 4076779), (28, 2911985), (31, 2630180), (35, 2329588), (62, 1315090), (70, 1164794), (124, 657545), (140, 582397), (155, 526036), (217, 375740), (310, 263018), (434, 187870), (620, 131509), (868, 93935), (1085, 75148), (2170, 37574), (4340, 18787)]