20658736

素因数分解:

$2^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1327}}^1$

素因数の和:1481

約数の個数: 40

約数和(自身を含む): 46108160

約数和(自身を除く): 25449424

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 139, 278, 556, 973, 1112, 1327, 1946, 2224, 2654, 3892, 5308, 7784, 9289, 10616, 15568, 18578, 21232, 37156, 74312, 148624, 184453, 368906, 737812, 1291171, 1475624, 2582342, 2951248, 5164684, 10329368, 20658736]

約数ペア:

[(1, 20658736), (2, 10329368), (4, 5164684), (7, 2951248), (8, 2582342), (14, 1475624), (16, 1291171), (28, 737812), (56, 368906), (112, 184453), (139, 148624), (278, 74312), (556, 37156), (973, 21232), (1112, 18578), (1327, 15568), (1946, 10616), (2224, 9289), (2654, 7784), (3892, 5308)]