820485890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{1674461}}^1$

素因数の和:1674482

約数の個数: 24

約数和(自身を含む): 1717998012

約数和(自身を除く): 897512122

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 1674461, 3348922, 8372305, 11721227, 16744610, 23442454, 58606135, 82048589, 117212270, 164097178, 410242945, 820485890]

約数ペア:

[(1, 820485890), (2, 410242945), (5, 164097178), (7, 117212270), (10, 82048589), (14, 58606135), (35, 23442454), (49, 16744610), (70, 11721227), (98, 8372305), (245, 3348922), (490, 1674461)]