20912578

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{4201}}^1$

素因数の和:4353

約数の個数: 16

約数和(自身を含む): 33279840

約数和(自身を除く): 12367262

約数列:

[1, 2, 19, 38, 131, 262, 2489, 4201, 4978, 8402, 79819, 159638, 550331, 1100662, 10456289, 20912578]

約数ペア:

[(1, 20912578), (2, 10456289), (19, 1100662), (38, 550331), (131, 159638), (262, 79819), (2489, 8402), (4201, 4978)]