217420420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{81737}}^1$

素因数の和:81772

約数の個数: 48

約数和(自身を含む): 549279360

約数和(自身を除く): 331858940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 81737, 163474, 326948, 408685, 572159, 817370, 1144318, 1553003, 1634740, 2288636, 2860795, 3106006, 5721590, 6212012, 7765015, 10871021, 11443180, 15530030, 21742042, 31060060, 43484084, 54355105, 108710210, 217420420]

約数ペア:

[(1, 217420420), (2, 108710210), (4, 54355105), (5, 43484084), (7, 31060060), (10, 21742042), (14, 15530030), (19, 11443180), (20, 10871021), (28, 7765015), (35, 6212012), (38, 5721590), (70, 3106006), (76, 2860795), (95, 2288636), (133, 1634740), (140, 1553003), (190, 1144318), (266, 817370), (380, 572159), (532, 408685), (665, 326948), (1330, 163474), (2660, 81737)]