81465680

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7433}}^1$

素因数の和:7583

約数の個数: 40

約数和(自身を含む): 190815912

約数和(自身を除く): 109350232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 2192, 2740, 5480, 7433, 10960, 14866, 29732, 37165, 59464, 74330, 118928, 148660, 297320, 594640, 1018321, 2036642, 4073284, 5091605, 8146568, 10183210, 16293136, 20366420, 40732840, 81465680]

約数ペア:

[(1, 81465680), (2, 40732840), (4, 20366420), (5, 16293136), (8, 10183210), (10, 8146568), (16, 5091605), (20, 4073284), (40, 2036642), (80, 1018321), (137, 594640), (274, 297320), (548, 148660), (685, 118928), (1096, 74330), (1370, 59464), (2192, 37165), (2740, 29732), (5480, 14866), (7433, 10960)]