81362240

素因数分解:

$2^6\times 5^1\times {\mathrm{254257}}^1$

素因数の和:254274

約数の個数: 28

約数和(自身を含む): 193744596

約数和(自身を除く): 112382356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 254257, 508514, 1017028, 1271285, 2034056, 2542570, 4068112, 5085140, 8136224, 10170280, 16272448, 20340560, 40681120, 81362240]

約数ペア:

[(1, 81362240), (2, 40681120), (4, 20340560), (5, 16272448), (8, 10170280), (10, 8136224), (16, 5085140), (20, 4068112), (32, 2542570), (40, 2034056), (64, 1271285), (80, 1017028), (160, 508514), (320, 254257)]