177920

素因数分解:

$2^8\times 5^1\times {\mathrm{139}}^1$

素因数の和:160

約数の個数: 36

約数和(自身を含む): 429240

約数和(自身を除く): 251320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 256, 278, 320, 556, 640, 695, 1112, 1280, 1390, 2224, 2780, 4448, 5560, 8896, 11120, 17792, 22240, 35584, 44480, 88960, 177920]

約数ペア:

[(1, 177920), (2, 88960), (4, 44480), (5, 35584), (8, 22240), (10, 17792), (16, 11120), (20, 8896), (32, 5560), (40, 4448), (64, 2780), (80, 2224), (128, 1390), (139, 1280), (160, 1112), (256, 695), (278, 640), (320, 556)]