17245420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{21031}}^1$

素因数の和:21081

約数の個数: 24

約数和(自身を含む): 37100448

約数和(自身を除く): 19855028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 21031, 42062, 84124, 105155, 210310, 420620, 862271, 1724542, 3449084, 4311355, 8622710, 17245420]

約数ペア:

[(1, 17245420), (2, 8622710), (4, 4311355), (5, 3449084), (10, 1724542), (20, 862271), (41, 420620), (82, 210310), (164, 105155), (205, 84124), (410, 42062), (820, 21031)]