155856640

素因数分解:

$2^8\times 5^1\times {\mathrm{121763}}^1$

素因数の和:121784

約数の個数: 36

約数和(自身を含む): 373328424

約数和(自身を除く): 217471784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 121763, 243526, 487052, 608815, 974104, 1217630, 1948208, 2435260, 3896416, 4870520, 7792832, 9741040, 15585664, 19482080, 31171328, 38964160, 77928320, 155856640]

約数ペア:

[(1, 155856640), (2, 77928320), (4, 38964160), (5, 31171328), (8, 19482080), (10, 15585664), (16, 9741040), (20, 7792832), (32, 4870520), (40, 3896416), (64, 2435260), (80, 1948208), (128, 1217630), (160, 974104), (256, 608815), (320, 487052), (640, 243526), (1280, 121763)]