20628776

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4139}}^1$

素因数の和:4241

約数の個数: 32

約数和(自身を含む): 44712000

約数和(自身を除く): 24083224

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4139, 4984, 8278, 16556, 28973, 33112, 57946, 115892, 231784, 368371, 736742, 1473484, 2578597, 2946968, 5157194, 10314388, 20628776]

約数ペア:

[(1, 20628776), (2, 10314388), (4, 5157194), (7, 2946968), (8, 2578597), (14, 1473484), (28, 736742), (56, 368371), (89, 231784), (178, 115892), (356, 57946), (623, 33112), (712, 28973), (1246, 16556), (2492, 8278), (4139, 4984)]