77985920

素因数分解:

$2^7\times 5^1\times {\mathrm{121853}}^1$

素因数の和:121872

約数の個数: 32

約数和(自身を含む): 186436620

約数和(自身を除く): 108450700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 121853, 243706, 487412, 609265, 974824, 1218530, 1949648, 2437060, 3899296, 4874120, 7798592, 9748240, 15597184, 19496480, 38992960, 77985920]

約数ペア:

[(1, 77985920), (2, 38992960), (4, 19496480), (5, 15597184), (8, 9748240), (10, 7798592), (16, 4874120), (20, 3899296), (32, 2437060), (40, 1949648), (64, 1218530), (80, 974824), (128, 609265), (160, 487412), (320, 243706), (640, 121853)]