155121920

素因数分解:

$2^8\times 5^1\times {\mathrm{121189}}^1$

素因数の和:121210

約数の個数: 36

約数和(自身を含む): 371568540

約数和(自身を除く): 216446620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 121189, 242378, 484756, 605945, 969512, 1211890, 1939024, 2423780, 3878048, 4847560, 7756096, 9695120, 15512192, 19390240, 31024384, 38780480, 77560960, 155121920]

約数ペア:

[(1, 155121920), (2, 77560960), (4, 38780480), (5, 31024384), (8, 19390240), (10, 15512192), (16, 9695120), (20, 7756096), (32, 4847560), (40, 3878048), (64, 2423780), (80, 1939024), (128, 1211890), (160, 969512), (256, 605945), (320, 484756), (640, 242378), (1280, 121189)]