164947840

素因数分解:

$2^7\times 5^1\times {\mathrm{257731}}^1$

素因数の和:257750

約数の個数: 32

約数和(自身を含む): 394329960

約数和(自身を除く): 229382120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 257731, 515462, 1030924, 1288655, 2061848, 2577310, 4123696, 5154620, 8247392, 10309240, 16494784, 20618480, 32989568, 41236960, 82473920, 164947840]

約数ペア:

[(1, 164947840), (2, 82473920), (4, 41236960), (5, 32989568), (8, 20618480), (10, 16494784), (16, 10309240), (20, 8247392), (32, 5154620), (40, 4123696), (64, 2577310), (80, 2061848), (128, 1288655), (160, 1030924), (320, 515462), (640, 257731)]