20498836

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{811}}^1$

素因数の和:975

約数の個数: 24

約数和(自身を含む): 36832320

約数和(自身を除く): 16333484

約数列:

[1, 2, 4, 71, 89, 142, 178, 284, 356, 811, 1622, 3244, 6319, 12638, 25276, 57581, 72179, 115162, 144358, 230324, 288716, 5124709, 10249418, 20498836]

約数ペア:

[(1, 20498836), (2, 10249418), (4, 5124709), (71, 288716), (89, 230324), (142, 144358), (178, 115162), (284, 72179), (356, 57581), (811, 25276), (1622, 12638), (3244, 6319)]