81201080

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19709}}^1$

素因数の和:19823

約数の個数: 32

約数和(自身を含む): 184485600

約数和(自身を除く): 103284520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 19709, 39418, 78836, 98545, 157672, 197090, 394180, 788360, 2030027, 4060054, 8120108, 10150135, 16240216, 20300270, 40600540, 81201080]

約数ペア:

[(1, 81201080), (2, 40600540), (4, 20300270), (5, 16240216), (8, 10150135), (10, 8120108), (20, 4060054), (40, 2030027), (103, 788360), (206, 394180), (412, 197090), (515, 157672), (824, 98545), (1030, 78836), (2060, 39418), (4120, 19709)]