25821140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41647}}^1$

素因数の和:41687

約数の個数: 24

約数和(自身を含む): 55974912

約数和(自身を除く): 30153772

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 41647, 83294, 166588, 208235, 416470, 832940, 1291057, 2582114, 5164228, 6455285, 12910570, 25821140]

約数ペア:

[(1, 25821140), (2, 12910570), (4, 6455285), (5, 5164228), (10, 2582114), (20, 1291057), (31, 832940), (62, 416470), (124, 208235), (155, 166588), (310, 83294), (620, 41647)]