205400960

素因数分解:

$2^7\times 5^1\times {\mathrm{320939}}^1$

素因数の和:320958

約数の個数: 32

約数和(自身を含む): 491038200

約数和(自身を除く): 285637240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 320939, 641878, 1283756, 1604695, 2567512, 3209390, 5135024, 6418780, 10270048, 12837560, 20540096, 25675120, 41080192, 51350240, 102700480, 205400960]

約数ペア:

[(1, 205400960), (2, 102700480), (4, 51350240), (5, 41080192), (8, 25675120), (10, 20540096), (16, 12837560), (20, 10270048), (32, 6418780), (40, 5135024), (64, 3209390), (80, 2567512), (128, 1604695), (160, 1283756), (320, 641878), (640, 320939)]